/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 00:07:35,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 00:07:35,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 00:07:35,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 00:07:35,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 00:07:35,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 00:07:35,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 00:07:35,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-06 00:07:35,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 00:07:35,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 00:07:35,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 00:07:35,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 00:07:35,738 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 00:07:35,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 00:07:35,738 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 00:07:35,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 00:07:35,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 00:07:35,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 00:07:35,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 00:07:35,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 00:07:35,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 00:07:35,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 00:07:35,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 00:07:35,740 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 00:07:35,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 00:07:35,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 00:07:35,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 00:07:35,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 00:07:35,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 00:07:35,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 00:07:35,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 00:07:35,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 00:07:35,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 00:07:35,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 00:07:35,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 00:07:35,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 00:07:35,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 00:07:36,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 00:07:36,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 00:07:36,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 00:07:36,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 00:07:36,081 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 00:07:36,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr.i [2021-05-06 00:07:36,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e031f1e/c3295341e7954681881786a1aa67eef0/FLAG26b6c9ce3 [2021-05-06 00:07:36,622 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 00:07:36,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr.i [2021-05-06 00:07:36,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e031f1e/c3295341e7954681881786a1aa67eef0/FLAG26b6c9ce3 [2021-05-06 00:07:37,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e031f1e/c3295341e7954681881786a1aa67eef0 [2021-05-06 00:07:37,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 00:07:37,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 00:07:37,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 00:07:37,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 00:07:37,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 00:07:37,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17851bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37, skipping insertion in model container [2021-05-06 00:07:37,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 00:07:37,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 00:07:37,287 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr.i[893,906] [2021-05-06 00:07:37,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:07:37,304 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 00:07:37,315 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr.i[893,906] [2021-05-06 00:07:37,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 00:07:37,368 INFO L208 MainTranslator]: Completed translation [2021-05-06 00:07:37,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37 WrapperNode [2021-05-06 00:07:37,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 00:07:37,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 00:07:37,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 00:07:37,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 00:07:37,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... [2021-05-06 00:07:37,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 00:07:37,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 00:07:37,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 00:07:37,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 00:07:37,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 00:07:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 00:07:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 00:07:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 00:07:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 00:07:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 00:07:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 00:07:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 00:07:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 00:07:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 00:07:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 00:07:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 00:07:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 00:07:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 00:07:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 00:07:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 00:07:37,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 00:07:37,781 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 00:07:37,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:07:37 BoogieIcfgContainer [2021-05-06 00:07:37,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 00:07:37,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 00:07:37,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 00:07:37,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 00:07:37,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:07:37" (1/3) ... [2021-05-06 00:07:37,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656018d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:07:37, skipping insertion in model container [2021-05-06 00:07:37,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:07:37" (2/3) ... [2021-05-06 00:07:37,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656018d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:07:37, skipping insertion in model container [2021-05-06 00:07:37,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:07:37" (3/3) ... [2021-05-06 00:07:37,788 INFO L111 eAbstractionObserver]: Analyzing ICFG string_concat-noarr.i [2021-05-06 00:07:37,792 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 00:07:37,796 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 00:07:37,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 00:07:37,829 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 00:07:37,830 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 00:07:37,830 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 00:07:37,830 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 00:07:37,830 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 00:07:37,830 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 00:07:37,830 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 00:07:37,830 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 00:07:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 00:07:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 00:07:37,863 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:37,863 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:37,864 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:37,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:37,868 INFO L82 PathProgramCache]: Analyzing trace with hash -623416428, now seen corresponding path program 1 times [2021-05-06 00:07:37,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:37,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260838333] [2021-05-06 00:07:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:38,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:38,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260838333] [2021-05-06 00:07:38,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260838333] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:07:38,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:07:38,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 00:07:38,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342818801] [2021-05-06 00:07:38,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 00:07:38,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:38,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 00:07:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 00:07:38,151 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:38,229 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-05-06 00:07:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 00:07:38,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-06 00:07:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:38,240 INFO L225 Difference]: With dead ends: 43 [2021-05-06 00:07:38,240 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 00:07:38,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 00:07:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 00:07:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-06 00:07:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-06 00:07:38,279 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-05-06 00:07:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:38,280 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-06 00:07:38,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-06 00:07:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 00:07:38,282 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:38,282 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:38,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 00:07:38,283 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1308012743, now seen corresponding path program 1 times [2021-05-06 00:07:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:38,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756242094] [2021-05-06 00:07:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:38,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:38,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756242094] [2021-05-06 00:07:38,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756242094] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:07:38,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 00:07:38,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 00:07:38,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142986476] [2021-05-06 00:07:38,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 00:07:38,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:38,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 00:07:38,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 00:07:38,411 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:38,561 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-05-06 00:07:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 00:07:38,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-06 00:07:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:38,563 INFO L225 Difference]: With dead ends: 29 [2021-05-06 00:07:38,563 INFO L226 Difference]: Without dead ends: 23 [2021-05-06 00:07:38,564 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-06 00:07:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-06 00:07:38,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-05-06 00:07:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-06 00:07:38,568 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2021-05-06 00:07:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:38,568 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-06 00:07:38,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-06 00:07:38,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-06 00:07:38,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:38,569 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:38,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 00:07:38,570 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:38,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:38,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1066675892, now seen corresponding path program 1 times [2021-05-06 00:07:38,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:38,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553014836] [2021-05-06 00:07:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:38,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:38,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553014836] [2021-05-06 00:07:38,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553014836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:38,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315211745] [2021-05-06 00:07:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:38,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 00:07:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:38,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:38,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:38,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:38,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:38,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315211745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:38,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:38,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-05-06 00:07:38,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719717566] [2021-05-06 00:07:38,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 00:07:38,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:38,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 00:07:38,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-06 00:07:38,929 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:39,162 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-06 00:07:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 00:07:39,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-06 00:07:39,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:39,167 INFO L225 Difference]: With dead ends: 38 [2021-05-06 00:07:39,167 INFO L226 Difference]: Without dead ends: 32 [2021-05-06 00:07:39,168 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 172.1ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-05-06 00:07:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-06 00:07:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-05-06 00:07:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-06 00:07:39,179 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2021-05-06 00:07:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:39,180 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-06 00:07:39,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-06 00:07:39,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-06 00:07:39,181 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:39,182 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:39,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 00:07:39,397 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:39,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1780147345, now seen corresponding path program 2 times [2021-05-06 00:07:39,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:39,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615353323] [2021-05-06 00:07:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:39,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:39,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:39,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615353323] [2021-05-06 00:07:39,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615353323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:39,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584286365] [2021-05-06 00:07:39,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:39,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:07:39,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:39,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-06 00:07:39,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:39,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:39,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:39,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:39,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:39,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:39,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:39,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584286365] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:39,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:39,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-05-06 00:07:39,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296779674] [2021-05-06 00:07:39,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 00:07:39,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:39,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 00:07:39,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-06 00:07:39,645 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:39,854 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-05-06 00:07:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 00:07:39,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-06 00:07:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:39,857 INFO L225 Difference]: With dead ends: 43 [2021-05-06 00:07:39,858 INFO L226 Difference]: Without dead ends: 37 [2021-05-06 00:07:39,858 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 178.1ms TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-05-06 00:07:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-06 00:07:39,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-05-06 00:07:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-06 00:07:39,868 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2021-05-06 00:07:39,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:39,869 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-06 00:07:39,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-06 00:07:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 00:07:39,870 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:39,871 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:40,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:40,094 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1683110550, now seen corresponding path program 3 times [2021-05-06 00:07:40,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:40,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576790386] [2021-05-06 00:07:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:40,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:40,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576790386] [2021-05-06 00:07:40,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576790386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:40,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224566527] [2021-05-06 00:07:40,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:40,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 00:07:40,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:40,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 00:07:40,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:40,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:40,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224566527] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:40,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:40,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-05-06 00:07:40,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788282392] [2021-05-06 00:07:40,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 00:07:40,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:40,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 00:07:40,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-05-06 00:07:40,418 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:40,652 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-05-06 00:07:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 00:07:40,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-06 00:07:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:40,656 INFO L225 Difference]: With dead ends: 48 [2021-05-06 00:07:40,656 INFO L226 Difference]: Without dead ends: 42 [2021-05-06 00:07:40,657 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 220.2ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-05-06 00:07:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-06 00:07:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2021-05-06 00:07:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-05-06 00:07:40,667 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 23 [2021-05-06 00:07:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:40,667 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-05-06 00:07:40,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-05-06 00:07:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-06 00:07:40,670 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:40,670 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:40,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:40,881 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1374936229, now seen corresponding path program 4 times [2021-05-06 00:07:40,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:40,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520693222] [2021-05-06 00:07:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:40,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:40,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520693222] [2021-05-06 00:07:40,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520693222] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:40,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082758269] [2021-05-06 00:07:40,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:41,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:07:41,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:41,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-06 00:07:41,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:41,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:41,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082758269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:41,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:41,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-05-06 00:07:41,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744133821] [2021-05-06 00:07:41,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 00:07:41,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:41,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 00:07:41,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-06 00:07:41,151 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:41,413 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-05-06 00:07:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 00:07:41,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-05-06 00:07:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:41,415 INFO L225 Difference]: With dead ends: 53 [2021-05-06 00:07:41,415 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 00:07:41,415 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 199.7ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-05-06 00:07:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 00:07:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2021-05-06 00:07:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-05-06 00:07:41,419 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 25 [2021-05-06 00:07:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:41,419 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-05-06 00:07:41,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-05-06 00:07:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 00:07:41,420 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:41,420 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:41,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:41,637 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1894706912, now seen corresponding path program 5 times [2021-05-06 00:07:41,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:41,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780766272] [2021-05-06 00:07:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:41,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:41,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780766272] [2021-05-06 00:07:41,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780766272] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:41,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885558076] [2021-05-06 00:07:41,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:41,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-06 00:07:41,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:41,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 00:07:41,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:41,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:41,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885558076] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:41,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:41,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2021-05-06 00:07:41,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019264985] [2021-05-06 00:07:41,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 00:07:41,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:41,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 00:07:41,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-05-06 00:07:41,913 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:42,224 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-05-06 00:07:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-06 00:07:42,224 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-06 00:07:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:42,225 INFO L225 Difference]: With dead ends: 58 [2021-05-06 00:07:42,225 INFO L226 Difference]: Without dead ends: 52 [2021-05-06 00:07:42,226 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 245.3ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-05-06 00:07:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-06 00:07:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-05-06 00:07:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-05-06 00:07:42,230 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 27 [2021-05-06 00:07:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:42,230 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-05-06 00:07:42,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-05-06 00:07:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 00:07:42,231 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:42,231 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:42,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-06 00:07:42,447 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:42,448 INFO L82 PathProgramCache]: Analyzing trace with hash -105704741, now seen corresponding path program 6 times [2021-05-06 00:07:42,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:42,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624083799] [2021-05-06 00:07:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:42,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:42,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:42,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624083799] [2021-05-06 00:07:42,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624083799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:42,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193781552] [2021-05-06 00:07:42,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:42,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-06 00:07:42,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:42,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 00:07:42,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:42,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193781552] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:42,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:42,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2021-05-06 00:07:42,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039437705] [2021-05-06 00:07:42,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-06 00:07:42,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-06 00:07:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-05-06 00:07:42,735 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:43,027 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-05-06 00:07:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 00:07:43,027 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-06 00:07:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:43,028 INFO L225 Difference]: With dead ends: 63 [2021-05-06 00:07:43,028 INFO L226 Difference]: Without dead ends: 57 [2021-05-06 00:07:43,029 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 257.3ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-05-06 00:07:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-06 00:07:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-05-06 00:07:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-05-06 00:07:43,033 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 29 [2021-05-06 00:07:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:43,033 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-05-06 00:07:43,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-05-06 00:07:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-06 00:07:43,034 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:43,034 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:43,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:43,249 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:43,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1138463190, now seen corresponding path program 7 times [2021-05-06 00:07:43,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:43,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773397302] [2021-05-06 00:07:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:43,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:43,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:43,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773397302] [2021-05-06 00:07:43,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773397302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:43,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252554794] [2021-05-06 00:07:43,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:43,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 00:07:43,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:43,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:43,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252554794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:43,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:43,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 16 [2021-05-06 00:07:43,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729233746] [2021-05-06 00:07:43,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 00:07:43,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:43,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 00:07:43,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-05-06 00:07:43,574 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:43,957 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-05-06 00:07:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-06 00:07:43,958 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-06 00:07:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:43,958 INFO L225 Difference]: With dead ends: 68 [2021-05-06 00:07:43,958 INFO L226 Difference]: Without dead ends: 62 [2021-05-06 00:07:43,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 319.0ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-05-06 00:07:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-06 00:07:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2021-05-06 00:07:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-05-06 00:07:43,963 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 31 [2021-05-06 00:07:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:43,963 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-05-06 00:07:43,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-05-06 00:07:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 00:07:43,964 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:43,964 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:44,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:44,173 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:44,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:44,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1512030703, now seen corresponding path program 8 times [2021-05-06 00:07:44,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:44,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36137467] [2021-05-06 00:07:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:44,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:44,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:44,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36137467] [2021-05-06 00:07:44,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36137467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:44,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704438355] [2021-05-06 00:07:44,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:44,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:07:44,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:44,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 00:07:44,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:44,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:44,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704438355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:44,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:44,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 17 [2021-05-06 00:07:44,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655559734] [2021-05-06 00:07:44,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-06 00:07:44,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:44,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-06 00:07:44,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-05-06 00:07:44,504 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:44,869 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2021-05-06 00:07:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 00:07:44,869 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-06 00:07:44,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:44,870 INFO L225 Difference]: With dead ends: 73 [2021-05-06 00:07:44,870 INFO L226 Difference]: Without dead ends: 67 [2021-05-06 00:07:44,870 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 331.2ms TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-05-06 00:07:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-06 00:07:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2021-05-06 00:07:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2021-05-06 00:07:44,874 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 33 [2021-05-06 00:07:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:44,875 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-05-06 00:07:44,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2021-05-06 00:07:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-06 00:07:44,876 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:44,876 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:45,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-06 00:07:45,085 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:45,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1721055348, now seen corresponding path program 9 times [2021-05-06 00:07:45,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:45,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555982826] [2021-05-06 00:07:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:45,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:45,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555982826] [2021-05-06 00:07:45,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555982826] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:45,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132415428] [2021-05-06 00:07:45,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:45,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 00:07:45,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:45,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 00:07:45,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:45,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132415428] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:45,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:45,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 18 [2021-05-06 00:07:45,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006514386] [2021-05-06 00:07:45,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-06 00:07:45,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-06 00:07:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-05-06 00:07:45,385 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:45,832 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2021-05-06 00:07:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-06 00:07:45,832 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-06 00:07:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:45,833 INFO L225 Difference]: With dead ends: 78 [2021-05-06 00:07:45,833 INFO L226 Difference]: Without dead ends: 72 [2021-05-06 00:07:45,834 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 418.8ms TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-05-06 00:07:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-06 00:07:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2021-05-06 00:07:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-05-06 00:07:45,838 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 35 [2021-05-06 00:07:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:45,839 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-05-06 00:07:45,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-05-06 00:07:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-06 00:07:45,840 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:45,840 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:46,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:46,053 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash -730276281, now seen corresponding path program 10 times [2021-05-06 00:07:46,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:46,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431948089] [2021-05-06 00:07:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:46,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:46,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431948089] [2021-05-06 00:07:46,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431948089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:46,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789923833] [2021-05-06 00:07:46,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:46,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:07:46,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:46,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-06 00:07:46,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:46,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:46,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789923833] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:46,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:46,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 19 [2021-05-06 00:07:46,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500569043] [2021-05-06 00:07:46,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-06 00:07:46,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-06 00:07:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-05-06 00:07:46,380 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:46,841 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-05-06 00:07:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 00:07:46,842 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-06 00:07:46,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:46,842 INFO L225 Difference]: With dead ends: 83 [2021-05-06 00:07:46,843 INFO L226 Difference]: Without dead ends: 77 [2021-05-06 00:07:46,843 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 388.6ms TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-05-06 00:07:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-06 00:07:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2021-05-06 00:07:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2021-05-06 00:07:46,847 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 37 [2021-05-06 00:07:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:46,847 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2021-05-06 00:07:46,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2021-05-06 00:07:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 00:07:46,849 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:46,849 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:47,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:47,069 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:47,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:47,070 INFO L82 PathProgramCache]: Analyzing trace with hash -2074332606, now seen corresponding path program 11 times [2021-05-06 00:07:47,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:47,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806164041] [2021-05-06 00:07:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:47,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:47,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806164041] [2021-05-06 00:07:47,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806164041] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:47,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166279691] [2021-05-06 00:07:47,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:47,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-06 00:07:47,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:47,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 00:07:47,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:47,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:47,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166279691] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:47,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:47,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 20 [2021-05-06 00:07:47,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395095686] [2021-05-06 00:07:47,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-06 00:07:47,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:47,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-06 00:07:47,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-05-06 00:07:47,421 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:47,915 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2021-05-06 00:07:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-06 00:07:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-06 00:07:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:47,916 INFO L225 Difference]: With dead ends: 88 [2021-05-06 00:07:47,916 INFO L226 Difference]: Without dead ends: 82 [2021-05-06 00:07:47,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 433.2ms TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 00:07:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-06 00:07:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-05-06 00:07:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-05-06 00:07:47,922 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 39 [2021-05-06 00:07:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:47,922 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-05-06 00:07:47,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-05-06 00:07:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 00:07:47,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:47,923 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:48,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-06 00:07:48,137 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:48,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:48,137 INFO L82 PathProgramCache]: Analyzing trace with hash -927304835, now seen corresponding path program 12 times [2021-05-06 00:07:48,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:48,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608121908] [2021-05-06 00:07:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:48,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:48,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608121908] [2021-05-06 00:07:48,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608121908] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:48,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300624469] [2021-05-06 00:07:48,296 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:48,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-06 00:07:48,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:48,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-06 00:07:48,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:48,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:48,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300624469] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:48,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:48,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 21 [2021-05-06 00:07:48,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293973536] [2021-05-06 00:07:48,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-06 00:07:48,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:48,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-06 00:07:48,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-05-06 00:07:48,494 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:49,021 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2021-05-06 00:07:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 00:07:49,021 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-06 00:07:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:49,022 INFO L225 Difference]: With dead ends: 93 [2021-05-06 00:07:49,022 INFO L226 Difference]: Without dead ends: 87 [2021-05-06 00:07:49,022 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 467.2ms TimeCoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 00:07:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-06 00:07:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2021-05-06 00:07:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 75 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2021-05-06 00:07:49,025 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 41 [2021-05-06 00:07:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:49,026 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2021-05-06 00:07:49,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2021-05-06 00:07:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-06 00:07:49,027 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:49,027 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:49,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-06 00:07:49,233 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1854755320, now seen corresponding path program 13 times [2021-05-06 00:07:49,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:49,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423682356] [2021-05-06 00:07:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:49,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:49,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:49,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423682356] [2021-05-06 00:07:49,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423682356] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:49,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253299134] [2021-05-06 00:07:49,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:49,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 00:07:49,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:49,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253299134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:49,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:49,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 22 [2021-05-06 00:07:49,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315232040] [2021-05-06 00:07:49,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-06 00:07:49,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:49,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-06 00:07:49,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2021-05-06 00:07:49,633 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:50,224 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-05-06 00:07:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-06 00:07:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-06 00:07:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:50,225 INFO L225 Difference]: With dead ends: 98 [2021-05-06 00:07:50,225 INFO L226 Difference]: Without dead ends: 92 [2021-05-06 00:07:50,227 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 537.1ms TimeCoverageRelationStatistics Valid=400, Invalid=1006, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 00:07:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-06 00:07:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2021-05-06 00:07:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.1875) internal successors, (95), 80 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2021-05-06 00:07:50,233 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 43 [2021-05-06 00:07:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:50,233 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2021-05-06 00:07:50,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2021-05-06 00:07:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-06 00:07:50,234 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:50,234 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:50,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-06 00:07:50,449 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:50,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:50,449 INFO L82 PathProgramCache]: Analyzing trace with hash -350061133, now seen corresponding path program 14 times [2021-05-06 00:07:50,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:50,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890590806] [2021-05-06 00:07:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:50,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:50,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890590806] [2021-05-06 00:07:50,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890590806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:50,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333814465] [2021-05-06 00:07:50,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:50,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:07:50,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:50,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-06 00:07:50,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:50,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:50,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333814465] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:50,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:50,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 23 [2021-05-06 00:07:50,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414664587] [2021-05-06 00:07:50,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-06 00:07:50,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:50,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-06 00:07:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-05-06 00:07:50,883 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:51,505 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2021-05-06 00:07:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 00:07:51,505 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-06 00:07:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:51,506 INFO L225 Difference]: With dead ends: 103 [2021-05-06 00:07:51,506 INFO L226 Difference]: Without dead ends: 97 [2021-05-06 00:07:51,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 592.2ms TimeCoverageRelationStatistics Valid=449, Invalid=1111, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 00:07:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-06 00:07:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2021-05-06 00:07:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.188235294117647) internal successors, (101), 85 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-05-06 00:07:51,510 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 45 [2021-05-06 00:07:51,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:51,510 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-05-06 00:07:51,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-05-06 00:07:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-06 00:07:51,511 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:51,511 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:51,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:51,717 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:51,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1759795538, now seen corresponding path program 15 times [2021-05-06 00:07:51,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:51,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872899448] [2021-05-06 00:07:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:51,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:51,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:51,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872899448] [2021-05-06 00:07:51,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872899448] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:51,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670362503] [2021-05-06 00:07:51,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:52,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-06 00:07:52,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:52,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 00:07:52,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:52,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:52,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670362503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:52,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:52,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 24 [2021-05-06 00:07:52,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741231966] [2021-05-06 00:07:52,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-06 00:07:52,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:52,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-06 00:07:52,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2021-05-06 00:07:52,181 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:52,756 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2021-05-06 00:07:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-06 00:07:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-06 00:07:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:52,757 INFO L225 Difference]: With dead ends: 108 [2021-05-06 00:07:52,757 INFO L226 Difference]: Without dead ends: 102 [2021-05-06 00:07:52,758 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 600.0ms TimeCoverageRelationStatistics Valid=501, Invalid=1221, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 00:07:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-06 00:07:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2021-05-06 00:07:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 90 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2021-05-06 00:07:52,761 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 47 [2021-05-06 00:07:52,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:52,761 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2021-05-06 00:07:52,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2021-05-06 00:07:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-06 00:07:52,762 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:52,762 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:52,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-06 00:07:52,965 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:52,965 INFO L82 PathProgramCache]: Analyzing trace with hash 695106793, now seen corresponding path program 16 times [2021-05-06 00:07:52,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:52,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480881222] [2021-05-06 00:07:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:53,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:53,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480881222] [2021-05-06 00:07:53,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480881222] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:53,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103320122] [2021-05-06 00:07:53,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:53,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:07:53,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:53,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-06 00:07:53,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:53,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:53,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103320122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:53,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:53,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 25 [2021-05-06 00:07:53,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744706337] [2021-05-06 00:07:53,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-06 00:07:53,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:53,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-06 00:07:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2021-05-06 00:07:53,375 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:53,999 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2021-05-06 00:07:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-06 00:07:54,000 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-06 00:07:54,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:54,000 INFO L225 Difference]: With dead ends: 113 [2021-05-06 00:07:54,000 INFO L226 Difference]: Without dead ends: 107 [2021-05-06 00:07:54,001 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 630.1ms TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 00:07:54,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-06 00:07:54,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2021-05-06 00:07:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 95 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-05-06 00:07:54,003 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 49 [2021-05-06 00:07:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:54,003 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-05-06 00:07:54,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-05-06 00:07:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-06 00:07:54,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:54,004 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:54,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-06 00:07:54,213 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1919201380, now seen corresponding path program 17 times [2021-05-06 00:07:54,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:54,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263605936] [2021-05-06 00:07:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:54,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:54,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263605936] [2021-05-06 00:07:54,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263605936] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:54,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364642314] [2021-05-06 00:07:54,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:54,537 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-06 00:07:54,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:54,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 00:07:54,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:54,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:54,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364642314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:54,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:54,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 26 [2021-05-06 00:07:54,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263807161] [2021-05-06 00:07:54,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-06 00:07:54,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:54,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-06 00:07:54,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2021-05-06 00:07:54,679 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:55,388 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2021-05-06 00:07:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-06 00:07:55,388 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-06 00:07:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:55,389 INFO L225 Difference]: With dead ends: 118 [2021-05-06 00:07:55,389 INFO L226 Difference]: Without dead ends: 112 [2021-05-06 00:07:55,389 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 665.7ms TimeCoverageRelationStatistics Valid=614, Invalid=1456, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 00:07:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-06 00:07:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2021-05-06 00:07:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.19) internal successors, (119), 100 states have internal predecessors, (119), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2021-05-06 00:07:55,392 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 51 [2021-05-06 00:07:55,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:55,392 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2021-05-06 00:07:55,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:55,392 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2021-05-06 00:07:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-06 00:07:55,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:55,393 INFO L523 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:55,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:55,597 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:55,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1453060383, now seen corresponding path program 18 times [2021-05-06 00:07:55,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:55,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155403927] [2021-05-06 00:07:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:55,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:55,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155403927] [2021-05-06 00:07:55,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155403927] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:55,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614839201] [2021-05-06 00:07:55,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:55,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-06 00:07:55,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:55,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-06 00:07:55,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:55,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:55,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:56,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614839201] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:56,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:56,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 27 [2021-05-06 00:07:56,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718582407] [2021-05-06 00:07:56,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-06 00:07:56,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:56,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-06 00:07:56,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2021-05-06 00:07:56,085 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 24 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:56,785 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2021-05-06 00:07:56,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-06 00:07:56,785 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 24 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-06 00:07:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:56,786 INFO L225 Difference]: With dead ends: 123 [2021-05-06 00:07:56,786 INFO L226 Difference]: Without dead ends: 117 [2021-05-06 00:07:56,787 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 752.3ms TimeCoverageRelationStatistics Valid=675, Invalid=1581, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 00:07:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-06 00:07:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2021-05-06 00:07:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 105 states have internal predecessors, (125), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2021-05-06 00:07:56,790 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 53 [2021-05-06 00:07:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:56,790 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2021-05-06 00:07:56,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 24 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2021-05-06 00:07:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-06 00:07:56,790 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:56,791 INFO L523 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:57,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:57,001 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash 168161050, now seen corresponding path program 19 times [2021-05-06 00:07:57,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:57,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920829305] [2021-05-06 00:07:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:57,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:57,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920829305] [2021-05-06 00:07:57,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920829305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:57,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665702977] [2021-05-06 00:07:57,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:57,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 00:07:57,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:57,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665702977] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:57,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:57,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 28 [2021-05-06 00:07:57,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119326681] [2021-05-06 00:07:57,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-06 00:07:57,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:57,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-06 00:07:57,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=491, Unknown=0, NotChecked=0, Total=756 [2021-05-06 00:07:57,501 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 25 states have internal predecessors, (60), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:58,268 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2021-05-06 00:07:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-06 00:07:58,269 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 25 states have internal predecessors, (60), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-06 00:07:58,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:58,270 INFO L225 Difference]: With dead ends: 128 [2021-05-06 00:07:58,270 INFO L226 Difference]: Without dead ends: 122 [2021-05-06 00:07:58,271 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 783.6ms TimeCoverageRelationStatistics Valid=739, Invalid=1711, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 00:07:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-06 00:07:58,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 115. [2021-05-06 00:07:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.190909090909091) internal successors, (131), 110 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2021-05-06 00:07:58,274 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 55 [2021-05-06 00:07:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:58,274 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-05-06 00:07:58,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 25 states have internal predecessors, (60), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2021-05-06 00:07:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-06 00:07:58,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:58,275 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:07:58,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:58,481 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:07:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:07:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1964484011, now seen corresponding path program 20 times [2021-05-06 00:07:58,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:07:58,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713248474] [2021-05-06 00:07:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:07:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:07:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:07:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:58,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:07:58,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713248474] [2021-05-06 00:07:58,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713248474] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:58,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275247024] [2021-05-06 00:07:58,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:07:58,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:07:58,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:07:58,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 00:07:58,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:07:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:59,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:07:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:07:59,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275247024] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:07:59,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:07:59,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 29 [2021-05-06 00:07:59,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760864519] [2021-05-06 00:07:59,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-06 00:07:59,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:07:59,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-06 00:07:59,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=524, Unknown=0, NotChecked=0, Total=812 [2021-05-06 00:07:59,026 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:59,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:07:59,841 INFO L93 Difference]: Finished difference Result 133 states and 155 transitions. [2021-05-06 00:07:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-06 00:07:59,843 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-06 00:07:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:07:59,844 INFO L225 Difference]: With dead ends: 133 [2021-05-06 00:07:59,844 INFO L226 Difference]: Without dead ends: 127 [2021-05-06 00:07:59,845 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 861.5ms TimeCoverageRelationStatistics Valid=806, Invalid=1846, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 00:07:59,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-06 00:07:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2021-05-06 00:07:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.191304347826087) internal successors, (137), 115 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-05-06 00:07:59,847 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 57 [2021-05-06 00:07:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:07:59,847 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-05-06 00:07:59,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:07:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2021-05-06 00:07:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-06 00:07:59,848 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:07:59,848 INFO L523 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:00,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-06 00:08:00,057 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:00,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1557979856, now seen corresponding path program 21 times [2021-05-06 00:08:00,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:00,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912065442] [2021-05-06 00:08:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:00,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:00,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:00,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912065442] [2021-05-06 00:08:00,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912065442] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:00,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875862984] [2021-05-06 00:08:00,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:00,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-06 00:08:00,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:00,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 00:08:00,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:00,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:00,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875862984] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:00,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:00,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 30 [2021-05-06 00:08:00,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897945789] [2021-05-06 00:08:00,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-06 00:08:00,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:00,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-06 00:08:00,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2021-05-06 00:08:00,628 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:01,439 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2021-05-06 00:08:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-06 00:08:01,439 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-06 00:08:01,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:01,440 INFO L225 Difference]: With dead ends: 138 [2021-05-06 00:08:01,440 INFO L226 Difference]: Without dead ends: 132 [2021-05-06 00:08:01,441 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 879.2ms TimeCoverageRelationStatistics Valid=876, Invalid=1986, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 00:08:01,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-06 00:08:01,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2021-05-06 00:08:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 120 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2021-05-06 00:08:01,443 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 59 [2021-05-06 00:08:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:01,444 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2021-05-06 00:08:01,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2021-05-06 00:08:01,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-06 00:08:01,444 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:01,444 INFO L523 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:01,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-06 00:08:01,657 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:01,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:01,657 INFO L82 PathProgramCache]: Analyzing trace with hash -2083440501, now seen corresponding path program 22 times [2021-05-06 00:08:01,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:01,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75597396] [2021-05-06 00:08:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:01,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:01,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75597396] [2021-05-06 00:08:01,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75597396] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:01,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177751647] [2021-05-06 00:08:01,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:02,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:08:02,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:02,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-06 00:08:02,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:02,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:02,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177751647] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:02,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:02,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 31 [2021-05-06 00:08:02,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164220041] [2021-05-06 00:08:02,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-06 00:08:02,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:02,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-06 00:08:02,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=593, Unknown=0, NotChecked=0, Total=930 [2021-05-06 00:08:02,203 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 28 states have internal predecessors, (66), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:03,090 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2021-05-06 00:08:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-06 00:08:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 28 states have internal predecessors, (66), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-06 00:08:03,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:03,091 INFO L225 Difference]: With dead ends: 143 [2021-05-06 00:08:03,091 INFO L226 Difference]: Without dead ends: 137 [2021-05-06 00:08:03,092 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 885.5ms TimeCoverageRelationStatistics Valid=949, Invalid=2131, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 00:08:03,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-06 00:08:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2021-05-06 00:08:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 125 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2021-05-06 00:08:03,095 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 61 [2021-05-06 00:08:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:03,095 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2021-05-06 00:08:03,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 28 states have internal predecessors, (66), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:03,096 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2021-05-06 00:08:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-06 00:08:03,096 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:03,096 INFO L523 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:03,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:03,309 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1090057338, now seen corresponding path program 23 times [2021-05-06 00:08:03,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:03,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68214366] [2021-05-06 00:08:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:03,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:03,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68214366] [2021-05-06 00:08:03,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68214366] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:03,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464115377] [2021-05-06 00:08:03,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:03,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-06 00:08:03,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:03,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-06 00:08:03,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:03,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:03,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464115377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:03,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:03,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 32 [2021-05-06 00:08:03,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544765574] [2021-05-06 00:08:03,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-06 00:08:03,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:03,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-06 00:08:03,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2021-05-06 00:08:03,899 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:04,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:04,838 INFO L93 Difference]: Finished difference Result 148 states and 173 transitions. [2021-05-06 00:08:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-06 00:08:04,838 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-06 00:08:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:04,839 INFO L225 Difference]: With dead ends: 148 [2021-05-06 00:08:04,839 INFO L226 Difference]: Without dead ends: 142 [2021-05-06 00:08:04,840 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 974.1ms TimeCoverageRelationStatistics Valid=1025, Invalid=2281, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 00:08:04,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-06 00:08:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2021-05-06 00:08:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 130 states have internal predecessors, (155), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2021-05-06 00:08:04,844 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 63 [2021-05-06 00:08:04,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:04,844 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2021-05-06 00:08:04,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2021-05-06 00:08:04,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-06 00:08:04,845 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:04,845 INFO L523 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:05,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-06 00:08:05,057 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:05,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:05,057 INFO L82 PathProgramCache]: Analyzing trace with hash 68422593, now seen corresponding path program 24 times [2021-05-06 00:08:05,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:05,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387726972] [2021-05-06 00:08:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:05,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:05,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387726972] [2021-05-06 00:08:05,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387726972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:05,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67660448] [2021-05-06 00:08:05,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:05,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-06 00:08:05,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:05,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 00:08:05,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:05,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:05,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67660448] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:05,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:05,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 33 [2021-05-06 00:08:05,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186458835] [2021-05-06 00:08:05,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-06 00:08:05,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:05,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-06 00:08:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=666, Unknown=0, NotChecked=0, Total=1056 [2021-05-06 00:08:05,704 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 30 states have internal predecessors, (70), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:06,658 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2021-05-06 00:08:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-06 00:08:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 30 states have internal predecessors, (70), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-06 00:08:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:06,660 INFO L225 Difference]: With dead ends: 153 [2021-05-06 00:08:06,660 INFO L226 Difference]: Without dead ends: 147 [2021-05-06 00:08:06,661 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1054.7ms TimeCoverageRelationStatistics Valid=1104, Invalid=2436, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 00:08:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-06 00:08:06,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2021-05-06 00:08:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 135 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:06,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2021-05-06 00:08:06,664 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 65 [2021-05-06 00:08:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:06,664 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2021-05-06 00:08:06,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 30 states have internal predecessors, (70), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2021-05-06 00:08:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-06 00:08:06,665 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:06,665 INFO L523 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:06,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:06,881 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:06,881 INFO L82 PathProgramCache]: Analyzing trace with hash 971106620, now seen corresponding path program 25 times [2021-05-06 00:08:06,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:06,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416489852] [2021-05-06 00:08:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:07,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:07,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416489852] [2021-05-06 00:08:07,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416489852] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:07,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806664204] [2021-05-06 00:08:07,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:07,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-06 00:08:07,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:07,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:07,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806664204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:07,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:07,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 34 [2021-05-06 00:08:07,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857889095] [2021-05-06 00:08:07,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-06 00:08:07,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-06 00:08:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=704, Unknown=0, NotChecked=0, Total=1122 [2021-05-06 00:08:07,545 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:08,573 INFO L93 Difference]: Finished difference Result 158 states and 185 transitions. [2021-05-06 00:08:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-06 00:08:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-06 00:08:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:08,574 INFO L225 Difference]: With dead ends: 158 [2021-05-06 00:08:08,574 INFO L226 Difference]: Without dead ends: 152 [2021-05-06 00:08:08,575 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1103.8ms TimeCoverageRelationStatistics Valid=1186, Invalid=2596, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 00:08:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-06 00:08:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2021-05-06 00:08:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 140 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2021-05-06 00:08:08,578 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 67 [2021-05-06 00:08:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:08,578 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2021-05-06 00:08:08,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2021-05-06 00:08:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-06 00:08:08,579 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:08,579 INFO L523 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:08,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-06 00:08:08,793 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash 867062775, now seen corresponding path program 26 times [2021-05-06 00:08:08,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:08,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749084492] [2021-05-06 00:08:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:09,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:09,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749084492] [2021-05-06 00:08:09,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749084492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:09,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509849472] [2021-05-06 00:08:09,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:09,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:08:09,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:09,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-06 00:08:09,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:09,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:09,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509849472] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:09,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:09,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 35 [2021-05-06 00:08:09,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739433806] [2021-05-06 00:08:09,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-06 00:08:09,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-06 00:08:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=743, Unknown=0, NotChecked=0, Total=1190 [2021-05-06 00:08:09,468 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:10,517 INFO L93 Difference]: Finished difference Result 163 states and 191 transitions. [2021-05-06 00:08:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-06 00:08:10,518 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-06 00:08:10,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:10,518 INFO L225 Difference]: With dead ends: 163 [2021-05-06 00:08:10,518 INFO L226 Difference]: Without dead ends: 157 [2021-05-06 00:08:10,519 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1105.4ms TimeCoverageRelationStatistics Valid=1271, Invalid=2761, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 00:08:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-06 00:08:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2021-05-06 00:08:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.193103448275862) internal successors, (173), 145 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2021-05-06 00:08:10,522 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 69 [2021-05-06 00:08:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:10,522 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2021-05-06 00:08:10,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2021-05-06 00:08:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-06 00:08:10,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:10,523 INFO L523 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:10,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-06 00:08:10,729 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:10,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:10,729 INFO L82 PathProgramCache]: Analyzing trace with hash -334824462, now seen corresponding path program 27 times [2021-05-06 00:08:10,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:10,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173621257] [2021-05-06 00:08:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:11,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:11,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173621257] [2021-05-06 00:08:11,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173621257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:11,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293349313] [2021-05-06 00:08:11,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:11,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-06 00:08:11,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:11,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 00:08:11,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:11,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:11,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293349313] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:11,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:11,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 36 [2021-05-06 00:08:11,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743466055] [2021-05-06 00:08:11,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-06 00:08:11,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-06 00:08:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-05-06 00:08:11,459 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 33 states have internal predecessors, (76), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:12,549 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2021-05-06 00:08:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-06 00:08:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 33 states have internal predecessors, (76), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-06 00:08:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:12,550 INFO L225 Difference]: With dead ends: 168 [2021-05-06 00:08:12,550 INFO L226 Difference]: Without dead ends: 162 [2021-05-06 00:08:12,551 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1211.3ms TimeCoverageRelationStatistics Valid=1359, Invalid=2931, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 00:08:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-06 00:08:12,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2021-05-06 00:08:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 150 states have internal predecessors, (179), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2021-05-06 00:08:12,555 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 71 [2021-05-06 00:08:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:12,555 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2021-05-06 00:08:12,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 33 states have internal predecessors, (76), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2021-05-06 00:08:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-06 00:08:12,556 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:12,556 INFO L523 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:12,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-06 00:08:12,769 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:12,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:12,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2256595, now seen corresponding path program 28 times [2021-05-06 00:08:12,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:12,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728082734] [2021-05-06 00:08:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:13,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:13,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728082734] [2021-05-06 00:08:13,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728082734] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:13,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157396412] [2021-05-06 00:08:13,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:13,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:08:13,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:13,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-06 00:08:13,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:13,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157396412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:13,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:13,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 37 [2021-05-06 00:08:13,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583623942] [2021-05-06 00:08:13,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-06 00:08:13,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:13,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-06 00:08:13,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=824, Unknown=0, NotChecked=0, Total=1332 [2021-05-06 00:08:13,469 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 34 states have internal predecessors, (78), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:14,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:14,779 INFO L93 Difference]: Finished difference Result 173 states and 203 transitions. [2021-05-06 00:08:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-06 00:08:14,780 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 34 states have internal predecessors, (78), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-06 00:08:14,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:14,781 INFO L225 Difference]: With dead ends: 173 [2021-05-06 00:08:14,781 INFO L226 Difference]: Without dead ends: 167 [2021-05-06 00:08:14,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1339.5ms TimeCoverageRelationStatistics Valid=1450, Invalid=3106, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 00:08:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-06 00:08:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2021-05-06 00:08:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 155 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2021-05-06 00:08:14,785 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 73 [2021-05-06 00:08:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:14,785 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2021-05-06 00:08:14,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 34 states have internal predecessors, (78), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2021-05-06 00:08:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-06 00:08:14,786 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:14,786 INFO L523 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:14,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:14,997 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:14,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:14,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1767883688, now seen corresponding path program 29 times [2021-05-06 00:08:14,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:14,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117869681] [2021-05-06 00:08:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:15,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:15,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:15,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117869681] [2021-05-06 00:08:15,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117869681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:15,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857873923] [2021-05-06 00:08:15,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:15,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-06 00:08:15,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:15,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-06 00:08:15,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:15,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:15,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857873923] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:15,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:15,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 38 [2021-05-06 00:08:15,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443451075] [2021-05-06 00:08:15,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-06 00:08:15,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:15,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-06 00:08:15,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=866, Unknown=0, NotChecked=0, Total=1406 [2021-05-06 00:08:15,726 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 35 states have internal predecessors, (80), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:16,883 INFO L93 Difference]: Finished difference Result 178 states and 209 transitions. [2021-05-06 00:08:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-06 00:08:16,883 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 35 states have internal predecessors, (80), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-06 00:08:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:16,884 INFO L225 Difference]: With dead ends: 178 [2021-05-06 00:08:16,884 INFO L226 Difference]: Without dead ends: 172 [2021-05-06 00:08:16,885 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1304.5ms TimeCoverageRelationStatistics Valid=1544, Invalid=3286, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 00:08:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-05-06 00:08:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2021-05-06 00:08:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.19375) internal successors, (191), 160 states have internal predecessors, (191), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 195 transitions. [2021-05-06 00:08:16,888 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 195 transitions. Word has length 75 [2021-05-06 00:08:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:16,888 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 195 transitions. [2021-05-06 00:08:16,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 35 states have internal predecessors, (80), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 195 transitions. [2021-05-06 00:08:16,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 00:08:16,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:16,889 INFO L523 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:17,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-06 00:08:17,105 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash 2065646435, now seen corresponding path program 30 times [2021-05-06 00:08:17,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:17,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700639004] [2021-05-06 00:08:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:17,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:17,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700639004] [2021-05-06 00:08:17,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700639004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:17,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346482318] [2021-05-06 00:08:17,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:17,670 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-06 00:08:17,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:17,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-06 00:08:17,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:17,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346482318] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:17,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:17,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 39 [2021-05-06 00:08:17,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002811078] [2021-05-06 00:08:17,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-06 00:08:17,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:17,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-06 00:08:17,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=909, Unknown=0, NotChecked=0, Total=1482 [2021-05-06 00:08:17,877 INFO L87 Difference]: Start difference. First operand 165 states and 195 transitions. Second operand has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:19,107 INFO L93 Difference]: Finished difference Result 183 states and 215 transitions. [2021-05-06 00:08:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-06 00:08:19,107 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-06 00:08:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:19,108 INFO L225 Difference]: With dead ends: 183 [2021-05-06 00:08:19,108 INFO L226 Difference]: Without dead ends: 177 [2021-05-06 00:08:19,109 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1367.3ms TimeCoverageRelationStatistics Valid=1641, Invalid=3471, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 00:08:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-06 00:08:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 170. [2021-05-06 00:08:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.1939393939393939) internal successors, (197), 165 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 201 transitions. [2021-05-06 00:08:19,112 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 201 transitions. Word has length 77 [2021-05-06 00:08:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:19,112 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 201 transitions. [2021-05-06 00:08:19,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 201 transitions. [2021-05-06 00:08:19,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-06 00:08:19,113 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:19,113 INFO L523 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:19,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:19,337 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:19,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:19,338 INFO L82 PathProgramCache]: Analyzing trace with hash 452837470, now seen corresponding path program 31 times [2021-05-06 00:08:19,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:19,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499630137] [2021-05-06 00:08:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:19,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:19,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499630137] [2021-05-06 00:08:19,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499630137] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:19,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631094378] [2021-05-06 00:08:19,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:19,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-06 00:08:19,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:20,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631094378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:20,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:20,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 40 [2021-05-06 00:08:20,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939489491] [2021-05-06 00:08:20,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-06 00:08:20,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:20,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-06 00:08:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=953, Unknown=0, NotChecked=0, Total=1560 [2021-05-06 00:08:20,175 INFO L87 Difference]: Start difference. First operand 170 states and 201 transitions. Second operand has 40 states, 40 states have (on average 2.1) internal successors, (84), 37 states have internal predecessors, (84), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:21,600 INFO L93 Difference]: Finished difference Result 188 states and 221 transitions. [2021-05-06 00:08:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-06 00:08:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 37 states have internal predecessors, (84), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-06 00:08:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:21,602 INFO L225 Difference]: With dead ends: 188 [2021-05-06 00:08:21,602 INFO L226 Difference]: Without dead ends: 182 [2021-05-06 00:08:21,603 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1557.0ms TimeCoverageRelationStatistics Valid=1741, Invalid=3661, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 00:08:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-06 00:08:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2021-05-06 00:08:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.1941176470588235) internal successors, (203), 170 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2021-05-06 00:08:21,607 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 79 [2021-05-06 00:08:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:21,607 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2021-05-06 00:08:21,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 37 states have internal predecessors, (84), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2021-05-06 00:08:21,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-06 00:08:21,608 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:21,608 INFO L523 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:21,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-06 00:08:21,825 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1026615961, now seen corresponding path program 32 times [2021-05-06 00:08:21,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:21,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732102186] [2021-05-06 00:08:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:22,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:22,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732102186] [2021-05-06 00:08:22,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732102186] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:22,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682974140] [2021-05-06 00:08:22,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:22,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:08:22,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:22,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-06 00:08:22,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:22,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:22,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682974140] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:22,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:22,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 41 [2021-05-06 00:08:22,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488601776] [2021-05-06 00:08:22,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-06 00:08:22,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:22,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-06 00:08:22,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=998, Unknown=0, NotChecked=0, Total=1640 [2021-05-06 00:08:22,666 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 38 states have internal predecessors, (86), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:23,969 INFO L93 Difference]: Finished difference Result 193 states and 227 transitions. [2021-05-06 00:08:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-06 00:08:23,969 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 38 states have internal predecessors, (86), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-06 00:08:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:23,970 INFO L225 Difference]: With dead ends: 193 [2021-05-06 00:08:23,970 INFO L226 Difference]: Without dead ends: 187 [2021-05-06 00:08:23,970 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1489.0ms TimeCoverageRelationStatistics Valid=1844, Invalid=3856, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 00:08:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-06 00:08:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 180. [2021-05-06 00:08:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.1942857142857144) internal successors, (209), 175 states have internal predecessors, (209), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 213 transitions. [2021-05-06 00:08:23,974 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 213 transitions. Word has length 81 [2021-05-06 00:08:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:23,975 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 213 transitions. [2021-05-06 00:08:23,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 38 states have internal predecessors, (86), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 213 transitions. [2021-05-06 00:08:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-06 00:08:23,976 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:23,976 INFO L523 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:24,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-06 00:08:24,201 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:24,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1623035372, now seen corresponding path program 33 times [2021-05-06 00:08:24,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:24,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963685766] [2021-05-06 00:08:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:24,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:24,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963685766] [2021-05-06 00:08:24,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963685766] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:24,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665504182] [2021-05-06 00:08:24,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:24,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-06 00:08:24,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:24,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-06 00:08:24,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:24,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:24,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:25,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665504182] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:25,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:25,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 42 [2021-05-06 00:08:25,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184266202] [2021-05-06 00:08:25,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-06 00:08:25,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:25,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-06 00:08:25,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=1044, Unknown=0, NotChecked=0, Total=1722 [2021-05-06 00:08:25,073 INFO L87 Difference]: Start difference. First operand 180 states and 213 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 39 states have internal predecessors, (88), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:26,486 INFO L93 Difference]: Finished difference Result 198 states and 233 transitions. [2021-05-06 00:08:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-06 00:08:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 39 states have internal predecessors, (88), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-06 00:08:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:26,487 INFO L225 Difference]: With dead ends: 198 [2021-05-06 00:08:26,487 INFO L226 Difference]: Without dead ends: 192 [2021-05-06 00:08:26,488 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1607.3ms TimeCoverageRelationStatistics Valid=1950, Invalid=4056, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 00:08:26,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-06 00:08:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 185. [2021-05-06 00:08:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.1944444444444444) internal successors, (215), 180 states have internal predecessors, (215), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 219 transitions. [2021-05-06 00:08:26,491 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 219 transitions. Word has length 83 [2021-05-06 00:08:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:26,492 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 219 transitions. [2021-05-06 00:08:26,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 39 states have internal predecessors, (88), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 219 transitions. [2021-05-06 00:08:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-06 00:08:26,493 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:26,493 INFO L523 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:26,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-06 00:08:26,709 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:26,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1022359857, now seen corresponding path program 34 times [2021-05-06 00:08:26,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:26,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015654975] [2021-05-06 00:08:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:27,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:27,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015654975] [2021-05-06 00:08:27,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015654975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:27,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159626802] [2021-05-06 00:08:27,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:27,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:08:27,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:27,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-06 00:08:27,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:27,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:27,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159626802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:27,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:27,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 43 [2021-05-06 00:08:27,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246978544] [2021-05-06 00:08:27,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-06 00:08:27,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-06 00:08:27,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=1091, Unknown=0, NotChecked=0, Total=1806 [2021-05-06 00:08:27,588 INFO L87 Difference]: Start difference. First operand 185 states and 219 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 40 states have internal predecessors, (90), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:29,040 INFO L93 Difference]: Finished difference Result 203 states and 239 transitions. [2021-05-06 00:08:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-06 00:08:29,040 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 40 states have internal predecessors, (90), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-06 00:08:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:29,041 INFO L225 Difference]: With dead ends: 203 [2021-05-06 00:08:29,041 INFO L226 Difference]: Without dead ends: 197 [2021-05-06 00:08:29,042 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1627.9ms TimeCoverageRelationStatistics Valid=2059, Invalid=4261, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 00:08:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-06 00:08:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2021-05-06 00:08:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1945945945945946) internal successors, (221), 185 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2021-05-06 00:08:29,045 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 85 [2021-05-06 00:08:29,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:29,045 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2021-05-06 00:08:29,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 40 states have internal predecessors, (90), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:29,045 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2021-05-06 00:08:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-06 00:08:29,046 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:29,046 INFO L523 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:29,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-06 00:08:29,261 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:29,261 INFO L82 PathProgramCache]: Analyzing trace with hash 701192394, now seen corresponding path program 35 times [2021-05-06 00:08:29,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:29,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815004570] [2021-05-06 00:08:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:29,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:29,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815004570] [2021-05-06 00:08:29,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815004570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:29,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435910533] [2021-05-06 00:08:29,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:30,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-06 00:08:30,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:30,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-06 00:08:30,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:30,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:30,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435910533] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:30,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:30,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 44 [2021-05-06 00:08:30,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470904039] [2021-05-06 00:08:30,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-06 00:08:30,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:30,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-06 00:08:30,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=1139, Unknown=0, NotChecked=0, Total=1892 [2021-05-06 00:08:30,251 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 41 states have internal predecessors, (92), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:31,797 INFO L93 Difference]: Finished difference Result 208 states and 245 transitions. [2021-05-06 00:08:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-06 00:08:31,798 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 41 states have internal predecessors, (92), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-06 00:08:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:31,799 INFO L225 Difference]: With dead ends: 208 [2021-05-06 00:08:31,799 INFO L226 Difference]: Without dead ends: 202 [2021-05-06 00:08:31,799 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 1779.9ms TimeCoverageRelationStatistics Valid=2171, Invalid=4471, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 00:08:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-06 00:08:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 195. [2021-05-06 00:08:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.194736842105263) internal successors, (227), 190 states have internal predecessors, (227), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-05-06 00:08:31,802 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 87 [2021-05-06 00:08:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:31,802 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-05-06 00:08:31,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 41 states have internal predecessors, (92), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-05-06 00:08:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-06 00:08:31,803 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:31,803 INFO L523 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:32,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-06 00:08:32,004 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:32,004 INFO L82 PathProgramCache]: Analyzing trace with hash -822470651, now seen corresponding path program 36 times [2021-05-06 00:08:32,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:32,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178673280] [2021-05-06 00:08:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:32,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:32,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:32,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178673280] [2021-05-06 00:08:32,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178673280] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:32,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046191642] [2021-05-06 00:08:32,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:32,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-06 00:08:32,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:32,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-06 00:08:32,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:32,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:32,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046191642] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:32,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:32,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 45 [2021-05-06 00:08:32,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075387052] [2021-05-06 00:08:32,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-06 00:08:32,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:32,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-06 00:08:32,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=1188, Unknown=0, NotChecked=0, Total=1980 [2021-05-06 00:08:32,946 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 42 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:34,453 INFO L93 Difference]: Finished difference Result 213 states and 251 transitions. [2021-05-06 00:08:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-06 00:08:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 42 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-06 00:08:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:34,454 INFO L225 Difference]: With dead ends: 213 [2021-05-06 00:08:34,454 INFO L226 Difference]: Without dead ends: 207 [2021-05-06 00:08:34,455 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1761.0ms TimeCoverageRelationStatistics Valid=2286, Invalid=4686, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 00:08:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-06 00:08:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 200. [2021-05-06 00:08:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.1948717948717948) internal successors, (233), 195 states have internal predecessors, (233), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 237 transitions. [2021-05-06 00:08:34,458 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 237 transitions. Word has length 89 [2021-05-06 00:08:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:34,458 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 237 transitions. [2021-05-06 00:08:34,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 42 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 237 transitions. [2021-05-06 00:08:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-06 00:08:34,459 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:34,459 INFO L523 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:34,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-06 00:08:34,673 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:34,673 INFO L82 PathProgramCache]: Analyzing trace with hash -478808960, now seen corresponding path program 37 times [2021-05-06 00:08:34,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:34,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730002334] [2021-05-06 00:08:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:35,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:35,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730002334] [2021-05-06 00:08:35,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730002334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:35,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432053340] [2021-05-06 00:08:35,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:35,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-06 00:08:35,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:35,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:35,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432053340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:35,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:35,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 46 [2021-05-06 00:08:35,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372381423] [2021-05-06 00:08:35,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-06 00:08:35,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:35,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-06 00:08:35,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=832, Invalid=1238, Unknown=0, NotChecked=0, Total=2070 [2021-05-06 00:08:35,687 INFO L87 Difference]: Start difference. First operand 200 states and 237 transitions. Second operand has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:37,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:37,271 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2021-05-06 00:08:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-06 00:08:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-06 00:08:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:37,272 INFO L225 Difference]: With dead ends: 218 [2021-05-06 00:08:37,272 INFO L226 Difference]: Without dead ends: 212 [2021-05-06 00:08:37,272 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1946.2ms TimeCoverageRelationStatistics Valid=2404, Invalid=4906, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 00:08:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-06 00:08:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2021-05-06 00:08:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.195) internal successors, (239), 200 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 243 transitions. [2021-05-06 00:08:37,274 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 243 transitions. Word has length 91 [2021-05-06 00:08:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:37,275 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 243 transitions. [2021-05-06 00:08:37,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 243 transitions. [2021-05-06 00:08:37,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-06 00:08:37,276 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:37,276 INFO L523 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:37,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-06 00:08:37,493 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:37,493 INFO L82 PathProgramCache]: Analyzing trace with hash -932405701, now seen corresponding path program 38 times [2021-05-06 00:08:37,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:37,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971667097] [2021-05-06 00:08:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:38,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:38,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:38,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971667097] [2021-05-06 00:08:38,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971667097] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:38,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415979456] [2021-05-06 00:08:38,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:38,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:08:38,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:38,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-06 00:08:38,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:38,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:38,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415979456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:38,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:38,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 47 [2021-05-06 00:08:38,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272600987] [2021-05-06 00:08:38,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-06 00:08:38,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:38,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-06 00:08:38,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=873, Invalid=1289, Unknown=0, NotChecked=0, Total=2162 [2021-05-06 00:08:38,557 INFO L87 Difference]: Start difference. First operand 205 states and 243 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 44 states have internal predecessors, (98), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:40,177 INFO L93 Difference]: Finished difference Result 223 states and 263 transitions. [2021-05-06 00:08:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-06 00:08:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 44 states have internal predecessors, (98), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-06 00:08:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:40,180 INFO L225 Difference]: With dead ends: 223 [2021-05-06 00:08:40,181 INFO L226 Difference]: Without dead ends: 217 [2021-05-06 00:08:40,185 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 1947.7ms TimeCoverageRelationStatistics Valid=2525, Invalid=5131, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 00:08:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-05-06 00:08:40,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 210. [2021-05-06 00:08:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1951219512195121) internal successors, (245), 205 states have internal predecessors, (245), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 249 transitions. [2021-05-06 00:08:40,189 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 249 transitions. Word has length 93 [2021-05-06 00:08:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:40,189 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 249 transitions. [2021-05-06 00:08:40,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 44 states have internal predecessors, (98), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 249 transitions. [2021-05-06 00:08:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 00:08:40,190 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:40,190 INFO L523 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:40,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-06 00:08:40,393 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1247790390, now seen corresponding path program 39 times [2021-05-06 00:08:40,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:40,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917256734] [2021-05-06 00:08:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:41,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:41,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:41,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917256734] [2021-05-06 00:08:41,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917256734] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:41,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691628476] [2021-05-06 00:08:41,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:41,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-06 00:08:41,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:41,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-06 00:08:41,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:41,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:41,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691628476] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:41,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:41,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 48 [2021-05-06 00:08:41,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078058857] [2021-05-06 00:08:41,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-06 00:08:41,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:41,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-06 00:08:41,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=915, Invalid=1341, Unknown=0, NotChecked=0, Total=2256 [2021-05-06 00:08:41,428 INFO L87 Difference]: Start difference. First operand 210 states and 249 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:43,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:43,248 INFO L93 Difference]: Finished difference Result 228 states and 269 transitions. [2021-05-06 00:08:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-06 00:08:43,248 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-06 00:08:43,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:43,249 INFO L225 Difference]: With dead ends: 228 [2021-05-06 00:08:43,249 INFO L226 Difference]: Without dead ends: 222 [2021-05-06 00:08:43,250 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 2084.2ms TimeCoverageRelationStatistics Valid=2649, Invalid=5361, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 00:08:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-05-06 00:08:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 215. [2021-05-06 00:08:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.1952380952380952) internal successors, (251), 210 states have internal predecessors, (251), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 255 transitions. [2021-05-06 00:08:43,252 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 255 transitions. Word has length 95 [2021-05-06 00:08:43,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:43,252 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 255 transitions. [2021-05-06 00:08:43,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 255 transitions. [2021-05-06 00:08:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-06 00:08:43,253 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:43,253 INFO L523 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:43,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:43,457 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:43,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:43,457 INFO L82 PathProgramCache]: Analyzing trace with hash 472193393, now seen corresponding path program 40 times [2021-05-06 00:08:43,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:43,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445429671] [2021-05-06 00:08:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:44,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:44,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445429671] [2021-05-06 00:08:44,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445429671] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:44,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291253943] [2021-05-06 00:08:44,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:44,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:08:44,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:44,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-06 00:08:44,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:44,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:44,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291253943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:44,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:44,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 49 [2021-05-06 00:08:44,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415776037] [2021-05-06 00:08:44,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-06 00:08:44,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:44,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-06 00:08:44,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=1394, Unknown=0, NotChecked=0, Total=2352 [2021-05-06 00:08:44,512 INFO L87 Difference]: Start difference. First operand 215 states and 255 transitions. Second operand has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 46 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:46,287 INFO L93 Difference]: Finished difference Result 233 states and 275 transitions. [2021-05-06 00:08:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-06 00:08:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 46 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-06 00:08:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:46,288 INFO L225 Difference]: With dead ends: 233 [2021-05-06 00:08:46,289 INFO L226 Difference]: Without dead ends: 227 [2021-05-06 00:08:46,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 2110.9ms TimeCoverageRelationStatistics Valid=2776, Invalid=5596, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 00:08:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-06 00:08:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-05-06 00:08:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.1953488372093024) internal successors, (257), 215 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 261 transitions. [2021-05-06 00:08:46,293 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 261 transitions. Word has length 97 [2021-05-06 00:08:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:46,293 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 261 transitions. [2021-05-06 00:08:46,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 46 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 261 transitions. [2021-05-06 00:08:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-06 00:08:46,294 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:46,294 INFO L523 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:46,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:46,509 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:46,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:46,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1847178516, now seen corresponding path program 41 times [2021-05-06 00:08:46,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:46,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341544562] [2021-05-06 00:08:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:47,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:47,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341544562] [2021-05-06 00:08:47,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341544562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:47,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703045756] [2021-05-06 00:08:47,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:47,395 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-06 00:08:47,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:47,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-06 00:08:47,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:47,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703045756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:47,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:47,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 50 [2021-05-06 00:08:47,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110205445] [2021-05-06 00:08:47,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-06 00:08:47,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:47,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-06 00:08:47,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1002, Invalid=1448, Unknown=0, NotChecked=0, Total=2450 [2021-05-06 00:08:47,623 INFO L87 Difference]: Start difference. First operand 220 states and 261 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 47 states have internal predecessors, (104), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:49,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:49,419 INFO L93 Difference]: Finished difference Result 238 states and 281 transitions. [2021-05-06 00:08:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-06 00:08:49,420 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 47 states have internal predecessors, (104), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-05-06 00:08:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:49,420 INFO L225 Difference]: With dead ends: 238 [2021-05-06 00:08:49,420 INFO L226 Difference]: Without dead ends: 232 [2021-05-06 00:08:49,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 2152.3ms TimeCoverageRelationStatistics Valid=2906, Invalid=5836, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 00:08:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-06 00:08:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2021-05-06 00:08:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 220 states have (on average 1.1954545454545455) internal successors, (263), 220 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2021-05-06 00:08:49,424 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 99 [2021-05-06 00:08:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:49,424 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2021-05-06 00:08:49,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 47 states have internal predecessors, (104), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2021-05-06 00:08:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-06 00:08:49,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:49,425 INFO L523 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:49,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-06 00:08:49,649 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:49,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1675556441, now seen corresponding path program 42 times [2021-05-06 00:08:49,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:49,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540679287] [2021-05-06 00:08:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:50,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:50,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540679287] [2021-05-06 00:08:50,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540679287] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:50,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758424849] [2021-05-06 00:08:50,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:50,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-06 00:08:50,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:50,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-06 00:08:50,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:50,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758424849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:50,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:50,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 51 [2021-05-06 00:08:50,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693413840] [2021-05-06 00:08:50,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-06 00:08:50,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:50,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-06 00:08:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1047, Invalid=1503, Unknown=0, NotChecked=0, Total=2550 [2021-05-06 00:08:50,807 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 48 states have internal predecessors, (106), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:52,677 INFO L93 Difference]: Finished difference Result 243 states and 287 transitions. [2021-05-06 00:08:52,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-06 00:08:52,678 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 48 states have internal predecessors, (106), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-06 00:08:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:52,679 INFO L225 Difference]: With dead ends: 243 [2021-05-06 00:08:52,679 INFO L226 Difference]: Without dead ends: 237 [2021-05-06 00:08:52,679 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 2254.4ms TimeCoverageRelationStatistics Valid=3039, Invalid=6081, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 00:08:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-06 00:08:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2021-05-06 00:08:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1955555555555555) internal successors, (269), 225 states have internal predecessors, (269), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 273 transitions. [2021-05-06 00:08:52,683 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 273 transitions. Word has length 101 [2021-05-06 00:08:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:52,683 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 273 transitions. [2021-05-06 00:08:52,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 48 states have internal predecessors, (106), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 273 transitions. [2021-05-06 00:08:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-06 00:08:52,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:52,684 INFO L523 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:52,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:52,897 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:52,897 INFO L82 PathProgramCache]: Analyzing trace with hash 44500386, now seen corresponding path program 43 times [2021-05-06 00:08:52,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:52,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001175309] [2021-05-06 00:08:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:53,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:53,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001175309] [2021-05-06 00:08:53,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001175309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:53,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437830151] [2021-05-06 00:08:53,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:53,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-06 00:08:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:53,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:53,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:54,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437830151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:54,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:54,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 52 [2021-05-06 00:08:54,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325978704] [2021-05-06 00:08:54,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-06 00:08:54,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:54,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-06 00:08:54,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1093, Invalid=1559, Unknown=0, NotChecked=0, Total=2652 [2021-05-06 00:08:54,082 INFO L87 Difference]: Start difference. First operand 230 states and 273 transitions. Second operand has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 49 states have internal predecessors, (108), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:56,046 INFO L93 Difference]: Finished difference Result 248 states and 293 transitions. [2021-05-06 00:08:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-06 00:08:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 49 states have internal predecessors, (108), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-06 00:08:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:56,047 INFO L225 Difference]: With dead ends: 248 [2021-05-06 00:08:56,047 INFO L226 Difference]: Without dead ends: 242 [2021-05-06 00:08:56,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 2347.2ms TimeCoverageRelationStatistics Valid=3175, Invalid=6331, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 00:08:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-06 00:08:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2021-05-06 00:08:56,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 230 states have (on average 1.1956521739130435) internal successors, (275), 230 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2021-05-06 00:08:56,051 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 103 [2021-05-06 00:08:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:56,051 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2021-05-06 00:08:56,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 49 states have internal predecessors, (108), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2021-05-06 00:08:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-06 00:08:56,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:56,052 INFO L523 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:56,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:56,275 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:56,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:56,275 INFO L82 PathProgramCache]: Analyzing trace with hash -543297827, now seen corresponding path program 44 times [2021-05-06 00:08:56,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:56,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387756266] [2021-05-06 00:08:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:08:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:08:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:57,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:08:57,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387756266] [2021-05-06 00:08:57,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387756266] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:57,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577121238] [2021-05-06 00:08:57,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:08:57,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:08:57,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:08:57,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-06 00:08:57,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:08:57,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:08:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:08:57,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577121238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:08:57,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:08:57,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 53 [2021-05-06 00:08:57,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419738212] [2021-05-06 00:08:57,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-06 00:08:57,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:08:57,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-06 00:08:57,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=1616, Unknown=0, NotChecked=0, Total=2756 [2021-05-06 00:08:57,550 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 50 states have internal predecessors, (110), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:08:59,632 INFO L93 Difference]: Finished difference Result 253 states and 299 transitions. [2021-05-06 00:08:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-06 00:08:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 50 states have internal predecessors, (110), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-06 00:08:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:08:59,633 INFO L225 Difference]: With dead ends: 253 [2021-05-06 00:08:59,634 INFO L226 Difference]: Without dead ends: 247 [2021-05-06 00:08:59,634 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 2477.8ms TimeCoverageRelationStatistics Valid=3314, Invalid=6586, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 00:08:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-06 00:08:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2021-05-06 00:08:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.195744680851064) internal successors, (281), 235 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 285 transitions. [2021-05-06 00:08:59,637 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 285 transitions. Word has length 105 [2021-05-06 00:08:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:08:59,637 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 285 transitions. [2021-05-06 00:08:59,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 50 states have internal predecessors, (110), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:08:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 285 transitions. [2021-05-06 00:08:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-06 00:08:59,638 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:08:59,638 INFO L523 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:08:59,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-06 00:08:59,861 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:08:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:08:59,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1518302552, now seen corresponding path program 45 times [2021-05-06 00:08:59,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:08:59,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129364199] [2021-05-06 00:08:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:08:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:00,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:00,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129364199] [2021-05-06 00:09:00,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129364199] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:00,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851251525] [2021-05-06 00:09:00,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:00,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-06 00:09:00,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:00,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-06 00:09:00,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:00,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:00,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:01,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851251525] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:01,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:01,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 54 [2021-05-06 00:09:01,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775446392] [2021-05-06 00:09:01,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-06 00:09:01,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:01,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-06 00:09:01,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1188, Invalid=1674, Unknown=0, NotChecked=0, Total=2862 [2021-05-06 00:09:01,187 INFO L87 Difference]: Start difference. First operand 240 states and 285 transitions. Second operand has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 51 states have internal predecessors, (112), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:03,359 INFO L93 Difference]: Finished difference Result 258 states and 305 transitions. [2021-05-06 00:09:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-06 00:09:03,359 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 51 states have internal predecessors, (112), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-06 00:09:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:03,360 INFO L225 Difference]: With dead ends: 258 [2021-05-06 00:09:03,360 INFO L226 Difference]: Without dead ends: 252 [2021-05-06 00:09:03,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 2576.1ms TimeCoverageRelationStatistics Valid=3456, Invalid=6846, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 00:09:03,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-05-06 00:09:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 245. [2021-05-06 00:09:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.1958333333333333) internal successors, (287), 240 states have internal predecessors, (287), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 291 transitions. [2021-05-06 00:09:03,363 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 291 transitions. Word has length 107 [2021-05-06 00:09:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:03,364 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 291 transitions. [2021-05-06 00:09:03,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 51 states have internal predecessors, (112), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 291 transitions. [2021-05-06 00:09:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-06 00:09:03,364 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:03,364 INFO L523 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:03,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-06 00:09:03,565 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1558623981, now seen corresponding path program 46 times [2021-05-06 00:09:03,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:03,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735084222] [2021-05-06 00:09:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:04,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:04,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735084222] [2021-05-06 00:09:04,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735084222] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:04,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394583137] [2021-05-06 00:09:04,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:04,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:09:04,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:04,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-06 00:09:04,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:04,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:04,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394583137] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:04,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:04,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 55 [2021-05-06 00:09:04,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827412946] [2021-05-06 00:09:04,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-06 00:09:04,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:04,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-06 00:09:04,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1237, Invalid=1733, Unknown=0, NotChecked=0, Total=2970 [2021-05-06 00:09:04,909 INFO L87 Difference]: Start difference. First operand 245 states and 291 transitions. Second operand has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 52 states have internal predecessors, (114), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:07,055 INFO L93 Difference]: Finished difference Result 263 states and 311 transitions. [2021-05-06 00:09:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-06 00:09:07,056 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 52 states have internal predecessors, (114), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-06 00:09:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:07,056 INFO L225 Difference]: With dead ends: 263 [2021-05-06 00:09:07,057 INFO L226 Difference]: Without dead ends: 257 [2021-05-06 00:09:07,057 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 2659.8ms TimeCoverageRelationStatistics Valid=3601, Invalid=7111, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 00:09:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-05-06 00:09:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 250. [2021-05-06 00:09:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.1959183673469387) internal successors, (293), 245 states have internal predecessors, (293), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 297 transitions. [2021-05-06 00:09:07,061 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 297 transitions. Word has length 109 [2021-05-06 00:09:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:07,061 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 297 transitions. [2021-05-06 00:09:07,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 52 states have internal predecessors, (114), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 297 transitions. [2021-05-06 00:09:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-06 00:09:07,062 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:07,062 INFO L523 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:07,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-06 00:09:07,269 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:07,269 INFO L82 PathProgramCache]: Analyzing trace with hash 747444750, now seen corresponding path program 47 times [2021-05-06 00:09:07,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:07,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254008800] [2021-05-06 00:09:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:08,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:08,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254008800] [2021-05-06 00:09:08,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254008800] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:08,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383153] [2021-05-06 00:09:08,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:08,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-06 00:09:08,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:08,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-06 00:09:08,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:08,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:08,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383153] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:08,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:08,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 56 [2021-05-06 00:09:08,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864132226] [2021-05-06 00:09:08,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-06 00:09:08,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:08,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-06 00:09:08,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1287, Invalid=1793, Unknown=0, NotChecked=0, Total=3080 [2021-05-06 00:09:08,660 INFO L87 Difference]: Start difference. First operand 250 states and 297 transitions. Second operand has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 53 states have internal predecessors, (116), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:10,839 INFO L93 Difference]: Finished difference Result 268 states and 317 transitions. [2021-05-06 00:09:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-06 00:09:10,839 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 53 states have internal predecessors, (116), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-06 00:09:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:10,840 INFO L225 Difference]: With dead ends: 268 [2021-05-06 00:09:10,840 INFO L226 Difference]: Without dead ends: 262 [2021-05-06 00:09:10,841 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 2722.3ms TimeCoverageRelationStatistics Valid=3749, Invalid=7381, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 00:09:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-05-06 00:09:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 255. [2021-05-06 00:09:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.196) internal successors, (299), 250 states have internal predecessors, (299), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2021-05-06 00:09:10,844 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 111 [2021-05-06 00:09:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:10,844 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2021-05-06 00:09:10,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 53 states have internal predecessors, (116), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2021-05-06 00:09:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 00:09:10,845 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:10,845 INFO L523 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:11,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:11,068 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:11,068 INFO L82 PathProgramCache]: Analyzing trace with hash 676370505, now seen corresponding path program 48 times [2021-05-06 00:09:11,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:11,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744640776] [2021-05-06 00:09:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:12,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:12,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744640776] [2021-05-06 00:09:12,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744640776] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:12,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756266607] [2021-05-06 00:09:12,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:12,270 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-06 00:09:12,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:12,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-06 00:09:12,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:12,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:12,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756266607] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:12,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:12,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 57 [2021-05-06 00:09:12,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426463475] [2021-05-06 00:09:12,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-06 00:09:12,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:12,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-06 00:09:12,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1338, Invalid=1854, Unknown=0, NotChecked=0, Total=3192 [2021-05-06 00:09:12,509 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 54 states have internal predecessors, (118), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:14,754 INFO L93 Difference]: Finished difference Result 273 states and 323 transitions. [2021-05-06 00:09:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-06 00:09:14,755 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 54 states have internal predecessors, (118), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-06 00:09:14,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:14,755 INFO L225 Difference]: With dead ends: 273 [2021-05-06 00:09:14,755 INFO L226 Difference]: Without dead ends: 267 [2021-05-06 00:09:14,756 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2794.2ms TimeCoverageRelationStatistics Valid=3900, Invalid=7656, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 00:09:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-05-06 00:09:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 260. [2021-05-06 00:09:14,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 255 states have (on average 1.196078431372549) internal successors, (305), 255 states have internal predecessors, (305), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 309 transitions. [2021-05-06 00:09:14,759 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 309 transitions. Word has length 113 [2021-05-06 00:09:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:14,760 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 309 transitions. [2021-05-06 00:09:14,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 54 states have internal predecessors, (118), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 309 transitions. [2021-05-06 00:09:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-06 00:09:14,761 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:14,761 INFO L523 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:14,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-06 00:09:14,983 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:14,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1093497796, now seen corresponding path program 49 times [2021-05-06 00:09:14,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:14,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772498510] [2021-05-06 00:09:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:16,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:16,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772498510] [2021-05-06 00:09:16,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772498510] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:16,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436910133] [2021-05-06 00:09:16,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:16,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-06 00:09:16,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:16,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:16,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436910133] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:16,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:16,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 58 [2021-05-06 00:09:16,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529262928] [2021-05-06 00:09:16,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-06 00:09:16,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:16,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-06 00:09:16,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1390, Invalid=1916, Unknown=0, NotChecked=0, Total=3306 [2021-05-06 00:09:16,470 INFO L87 Difference]: Start difference. First operand 260 states and 309 transitions. Second operand has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 55 states have internal predecessors, (120), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:18,847 INFO L93 Difference]: Finished difference Result 278 states and 329 transitions. [2021-05-06 00:09:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-06 00:09:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 55 states have internal predecessors, (120), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2021-05-06 00:09:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:18,849 INFO L225 Difference]: With dead ends: 278 [2021-05-06 00:09:18,849 INFO L226 Difference]: Without dead ends: 272 [2021-05-06 00:09:18,849 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 2964.6ms TimeCoverageRelationStatistics Valid=4054, Invalid=7936, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 00:09:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-06 00:09:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2021-05-06 00:09:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 260 states have (on average 1.1961538461538461) internal successors, (311), 260 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 315 transitions. [2021-05-06 00:09:18,853 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 315 transitions. Word has length 115 [2021-05-06 00:09:18,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:18,853 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 315 transitions. [2021-05-06 00:09:18,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 55 states have internal predecessors, (120), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 315 transitions. [2021-05-06 00:09:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-06 00:09:18,854 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:18,854 INFO L523 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:19,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:19,077 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:19,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:19,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1774101377, now seen corresponding path program 50 times [2021-05-06 00:09:19,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:19,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581378024] [2021-05-06 00:09:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:20,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:20,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581378024] [2021-05-06 00:09:20,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581378024] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:20,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123721140] [2021-05-06 00:09:20,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:20,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:09:20,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:20,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-06 00:09:20,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:20,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:20,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123721140] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:20,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:20,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 59 [2021-05-06 00:09:20,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891266833] [2021-05-06 00:09:20,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-06 00:09:20,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:20,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-06 00:09:20,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=1979, Unknown=0, NotChecked=0, Total=3422 [2021-05-06 00:09:20,553 INFO L87 Difference]: Start difference. First operand 265 states and 315 transitions. Second operand has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 56 states have internal predecessors, (122), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:23,003 INFO L93 Difference]: Finished difference Result 283 states and 335 transitions. [2021-05-06 00:09:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-06 00:09:23,004 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 56 states have internal predecessors, (122), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-06 00:09:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:23,005 INFO L225 Difference]: With dead ends: 283 [2021-05-06 00:09:23,005 INFO L226 Difference]: Without dead ends: 277 [2021-05-06 00:09:23,005 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 2976.1ms TimeCoverageRelationStatistics Valid=4211, Invalid=8221, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 00:09:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-05-06 00:09:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 270. [2021-05-06 00:09:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.1962264150943396) internal successors, (317), 265 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 321 transitions. [2021-05-06 00:09:23,009 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 321 transitions. Word has length 117 [2021-05-06 00:09:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:23,009 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 321 transitions. [2021-05-06 00:09:23,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 56 states have internal predecessors, (122), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 321 transitions. [2021-05-06 00:09:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-06 00:09:23,010 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:23,010 INFO L523 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:23,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:23,225 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:23,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:23,225 INFO L82 PathProgramCache]: Analyzing trace with hash -167902598, now seen corresponding path program 51 times [2021-05-06 00:09:23,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:23,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985453740] [2021-05-06 00:09:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:24,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:24,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:24,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985453740] [2021-05-06 00:09:24,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985453740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:24,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292446369] [2021-05-06 00:09:24,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:24,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-05-06 00:09:24,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:24,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-06 00:09:24,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:24,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:24,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292446369] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:24,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:24,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 60 [2021-05-06 00:09:24,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130440524] [2021-05-06 00:09:24,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-06 00:09:24,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:24,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-06 00:09:24,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1497, Invalid=2043, Unknown=0, NotChecked=0, Total=3540 [2021-05-06 00:09:24,762 INFO L87 Difference]: Start difference. First operand 270 states and 321 transitions. Second operand has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 57 states have internal predecessors, (124), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:27,220 INFO L93 Difference]: Finished difference Result 288 states and 341 transitions. [2021-05-06 00:09:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-06 00:09:27,221 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 57 states have internal predecessors, (124), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-06 00:09:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:27,221 INFO L225 Difference]: With dead ends: 288 [2021-05-06 00:09:27,222 INFO L226 Difference]: Without dead ends: 282 [2021-05-06 00:09:27,222 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 3089.7ms TimeCoverageRelationStatistics Valid=4371, Invalid=8511, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 00:09:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-06 00:09:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2021-05-06 00:09:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.1962962962962962) internal successors, (323), 270 states have internal predecessors, (323), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 327 transitions. [2021-05-06 00:09:27,225 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 327 transitions. Word has length 119 [2021-05-06 00:09:27,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:27,225 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 327 transitions. [2021-05-06 00:09:27,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 57 states have internal predecessors, (124), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 327 transitions. [2021-05-06 00:09:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-06 00:09:27,226 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:27,226 INFO L523 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:27,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-06 00:09:27,440 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:27,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1495864757, now seen corresponding path program 52 times [2021-05-06 00:09:27,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:27,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037160994] [2021-05-06 00:09:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:28,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:28,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:28,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037160994] [2021-05-06 00:09:28,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037160994] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:28,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406435016] [2021-05-06 00:09:28,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:28,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:09:28,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:28,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-06 00:09:28,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:28,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:28,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:29,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406435016] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:29,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:29,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 61 [2021-05-06 00:09:29,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804053582] [2021-05-06 00:09:29,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-06 00:09:29,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:29,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-06 00:09:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1552, Invalid=2108, Unknown=0, NotChecked=0, Total=3660 [2021-05-06 00:09:29,016 INFO L87 Difference]: Start difference. First operand 275 states and 327 transitions. Second operand has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 58 states have internal predecessors, (126), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:31,598 INFO L93 Difference]: Finished difference Result 293 states and 347 transitions. [2021-05-06 00:09:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-06 00:09:31,599 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 58 states have internal predecessors, (126), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-06 00:09:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:31,600 INFO L225 Difference]: With dead ends: 293 [2021-05-06 00:09:31,600 INFO L226 Difference]: Without dead ends: 287 [2021-05-06 00:09:31,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 3161.1ms TimeCoverageRelationStatistics Valid=4534, Invalid=8806, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 00:09:31,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-06 00:09:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 280. [2021-05-06 00:09:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.1963636363636363) internal successors, (329), 275 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 333 transitions. [2021-05-06 00:09:31,603 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 333 transitions. Word has length 121 [2021-05-06 00:09:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:31,603 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 333 transitions. [2021-05-06 00:09:31,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 58 states have internal predecessors, (126), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:31,603 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 333 transitions. [2021-05-06 00:09:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-06 00:09:31,605 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:31,605 INFO L523 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:31,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:31,828 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:31,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1646508496, now seen corresponding path program 53 times [2021-05-06 00:09:31,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:31,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424099715] [2021-05-06 00:09:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:33,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:33,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:33,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424099715] [2021-05-06 00:09:33,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424099715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:33,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991986889] [2021-05-06 00:09:33,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:33,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-05-06 00:09:33,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:33,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-06 00:09:33,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:33,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:33,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991986889] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:33,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:33,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 62 [2021-05-06 00:09:33,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468362092] [2021-05-06 00:09:33,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-06 00:09:33,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:33,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-06 00:09:33,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1608, Invalid=2174, Unknown=0, NotChecked=0, Total=3782 [2021-05-06 00:09:33,505 INFO L87 Difference]: Start difference. First operand 280 states and 333 transitions. Second operand has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:36,213 INFO L93 Difference]: Finished difference Result 298 states and 353 transitions. [2021-05-06 00:09:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-06 00:09:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-06 00:09:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:36,214 INFO L225 Difference]: With dead ends: 298 [2021-05-06 00:09:36,214 INFO L226 Difference]: Without dead ends: 292 [2021-05-06 00:09:36,215 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 3302.1ms TimeCoverageRelationStatistics Valid=4700, Invalid=9106, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 00:09:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-05-06 00:09:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 285. [2021-05-06 00:09:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.1964285714285714) internal successors, (335), 280 states have internal predecessors, (335), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 339 transitions. [2021-05-06 00:09:36,217 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 339 transitions. Word has length 123 [2021-05-06 00:09:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:36,217 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 339 transitions. [2021-05-06 00:09:36,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 339 transitions. [2021-05-06 00:09:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-06 00:09:36,218 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:36,218 INFO L523 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:36,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-06 00:09:36,419 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:36,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:36,419 INFO L82 PathProgramCache]: Analyzing trace with hash -2105195541, now seen corresponding path program 54 times [2021-05-06 00:09:36,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:36,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655389833] [2021-05-06 00:09:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:37,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:37,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655389833] [2021-05-06 00:09:37,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655389833] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:37,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872933716] [2021-05-06 00:09:37,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:37,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-06 00:09:37,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:37,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-06 00:09:37,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:37,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:37,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:38,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872933716] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:38,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:38,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 63 [2021-05-06 00:09:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416968745] [2021-05-06 00:09:38,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-06 00:09:38,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:38,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-06 00:09:38,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1665, Invalid=2241, Unknown=0, NotChecked=0, Total=3906 [2021-05-06 00:09:38,135 INFO L87 Difference]: Start difference. First operand 285 states and 339 transitions. Second operand has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 60 states have internal predecessors, (130), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:41,009 INFO L93 Difference]: Finished difference Result 303 states and 359 transitions. [2021-05-06 00:09:41,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-06 00:09:41,009 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 60 states have internal predecessors, (130), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-06 00:09:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:41,010 INFO L225 Difference]: With dead ends: 303 [2021-05-06 00:09:41,010 INFO L226 Difference]: Without dead ends: 297 [2021-05-06 00:09:41,011 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 3543.6ms TimeCoverageRelationStatistics Valid=4869, Invalid=9411, Unknown=0, NotChecked=0, Total=14280 [2021-05-06 00:09:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-05-06 00:09:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 290. [2021-05-06 00:09:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 1.1964912280701754) internal successors, (341), 285 states have internal predecessors, (341), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 345 transitions. [2021-05-06 00:09:41,013 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 345 transitions. Word has length 125 [2021-05-06 00:09:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:41,014 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 345 transitions. [2021-05-06 00:09:41,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 60 states have internal predecessors, (130), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 345 transitions. [2021-05-06 00:09:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-06 00:09:41,014 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:41,014 INFO L523 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:41,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-06 00:09:41,221 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:41,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:41,221 INFO L82 PathProgramCache]: Analyzing trace with hash -521814298, now seen corresponding path program 55 times [2021-05-06 00:09:41,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:41,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293321969] [2021-05-06 00:09:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:42,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:42,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293321969] [2021-05-06 00:09:42,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293321969] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:42,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466801676] [2021-05-06 00:09:42,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:42,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-06 00:09:42,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:42,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466801676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:42,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:42,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 64 [2021-05-06 00:09:42,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454531837] [2021-05-06 00:09:42,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-06 00:09:42,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:42,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-06 00:09:42,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1723, Invalid=2309, Unknown=0, NotChecked=0, Total=4032 [2021-05-06 00:09:42,905 INFO L87 Difference]: Start difference. First operand 290 states and 345 transitions. Second operand has 64 states, 64 states have (on average 2.0625) internal successors, (132), 61 states have internal predecessors, (132), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:45,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:45,739 INFO L93 Difference]: Finished difference Result 308 states and 365 transitions. [2021-05-06 00:09:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-06 00:09:45,740 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 61 states have internal predecessors, (132), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-06 00:09:45,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:45,741 INFO L225 Difference]: With dead ends: 308 [2021-05-06 00:09:45,741 INFO L226 Difference]: Without dead ends: 302 [2021-05-06 00:09:45,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 3503.8ms TimeCoverageRelationStatistics Valid=5041, Invalid=9721, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 00:09:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-05-06 00:09:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 295. [2021-05-06 00:09:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.196551724137931) internal successors, (347), 290 states have internal predecessors, (347), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 351 transitions. [2021-05-06 00:09:45,745 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 351 transitions. Word has length 127 [2021-05-06 00:09:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:45,745 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 351 transitions. [2021-05-06 00:09:45,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 61 states have internal predecessors, (132), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 351 transitions. [2021-05-06 00:09:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-06 00:09:45,746 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:45,746 INFO L523 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:45,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:45,957 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:45,957 INFO L82 PathProgramCache]: Analyzing trace with hash 689137441, now seen corresponding path program 56 times [2021-05-06 00:09:45,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:45,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810692470] [2021-05-06 00:09:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:47,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:47,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810692470] [2021-05-06 00:09:47,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810692470] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:47,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640908619] [2021-05-06 00:09:47,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:47,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:09:47,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:47,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-06 00:09:47,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:47,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:47,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640908619] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:47,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:47,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 65 [2021-05-06 00:09:47,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643371577] [2021-05-06 00:09:47,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-06 00:09:47,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:47,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-06 00:09:47,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1782, Invalid=2378, Unknown=0, NotChecked=0, Total=4160 [2021-05-06 00:09:47,691 INFO L87 Difference]: Start difference. First operand 295 states and 351 transitions. Second operand has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 62 states have internal predecessors, (134), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:50,599 INFO L93 Difference]: Finished difference Result 313 states and 371 transitions. [2021-05-06 00:09:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-06 00:09:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 62 states have internal predecessors, (134), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-06 00:09:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:50,600 INFO L225 Difference]: With dead ends: 313 [2021-05-06 00:09:50,600 INFO L226 Difference]: Without dead ends: 307 [2021-05-06 00:09:50,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3593.0ms TimeCoverageRelationStatistics Valid=5216, Invalid=10036, Unknown=0, NotChecked=0, Total=15252 [2021-05-06 00:09:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-05-06 00:09:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 300. [2021-05-06 00:09:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 295 states have (on average 1.1966101694915254) internal successors, (353), 295 states have internal predecessors, (353), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 357 transitions. [2021-05-06 00:09:50,603 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 357 transitions. Word has length 129 [2021-05-06 00:09:50,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:50,604 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 357 transitions. [2021-05-06 00:09:50,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 62 states have internal predecessors, (134), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 357 transitions. [2021-05-06 00:09:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-06 00:09:50,604 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:50,604 INFO L523 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:50,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-06 00:09:50,827 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:50,827 INFO L82 PathProgramCache]: Analyzing trace with hash 477621404, now seen corresponding path program 57 times [2021-05-06 00:09:50,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:50,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336526360] [2021-05-06 00:09:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:52,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:52,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336526360] [2021-05-06 00:09:52,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336526360] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:52,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590782477] [2021-05-06 00:09:52,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:52,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-06 00:09:52,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:52,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-06 00:09:52,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:52,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:52,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590782477] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:52,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:52,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 66 [2021-05-06 00:09:52,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743816285] [2021-05-06 00:09:52,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-06 00:09:52,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-06 00:09:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1842, Invalid=2448, Unknown=0, NotChecked=0, Total=4290 [2021-05-06 00:09:52,682 INFO L87 Difference]: Start difference. First operand 300 states and 357 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 63 states have internal predecessors, (136), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:09:55,599 INFO L93 Difference]: Finished difference Result 318 states and 377 transitions. [2021-05-06 00:09:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-06 00:09:55,599 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 63 states have internal predecessors, (136), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-05-06 00:09:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:09:55,600 INFO L225 Difference]: With dead ends: 318 [2021-05-06 00:09:55,600 INFO L226 Difference]: Without dead ends: 312 [2021-05-06 00:09:55,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 3730.2ms TimeCoverageRelationStatistics Valid=5394, Invalid=10356, Unknown=0, NotChecked=0, Total=15750 [2021-05-06 00:09:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-05-06 00:09:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 305. [2021-05-06 00:09:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 300 states have (on average 1.1966666666666668) internal successors, (359), 300 states have internal predecessors, (359), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 363 transitions. [2021-05-06 00:09:55,603 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 363 transitions. Word has length 131 [2021-05-06 00:09:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:09:55,603 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 363 transitions. [2021-05-06 00:09:55,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 63 states have internal predecessors, (136), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:09:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 363 transitions. [2021-05-06 00:09:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-06 00:09:55,604 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:09:55,604 INFO L523 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:09:55,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:55,805 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:09:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:09:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -925827241, now seen corresponding path program 58 times [2021-05-06 00:09:55,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:09:55,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164556069] [2021-05-06 00:09:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:09:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:09:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:09:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:57,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:09:57,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164556069] [2021-05-06 00:09:57,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164556069] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:57,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416832624] [2021-05-06 00:09:57,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:09:57,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:09:57,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:09:57,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-06 00:09:57,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:09:57,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:09:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:09:57,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416832624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:09:57,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:09:57,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 67 [2021-05-06 00:09:57,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367270384] [2021-05-06 00:09:57,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-06 00:09:57,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:09:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-06 00:09:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1903, Invalid=2519, Unknown=0, NotChecked=0, Total=4422 [2021-05-06 00:09:57,698 INFO L87 Difference]: Start difference. First operand 305 states and 363 transitions. Second operand has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 64 states have internal predecessors, (138), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:00,750 INFO L93 Difference]: Finished difference Result 323 states and 383 transitions. [2021-05-06 00:10:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-06 00:10:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 64 states have internal predecessors, (138), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-06 00:10:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:00,755 INFO L225 Difference]: With dead ends: 323 [2021-05-06 00:10:00,755 INFO L226 Difference]: Without dead ends: 317 [2021-05-06 00:10:00,756 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 3859.8ms TimeCoverageRelationStatistics Valid=5575, Invalid=10681, Unknown=0, NotChecked=0, Total=16256 [2021-05-06 00:10:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-05-06 00:10:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 310. [2021-05-06 00:10:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 305 states have (on average 1.1967213114754098) internal successors, (365), 305 states have internal predecessors, (365), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 369 transitions. [2021-05-06 00:10:00,759 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 369 transitions. Word has length 133 [2021-05-06 00:10:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:00,759 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 369 transitions. [2021-05-06 00:10:00,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 64 states have internal predecessors, (138), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:00,759 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 369 transitions. [2021-05-06 00:10:00,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-06 00:10:00,760 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:00,760 INFO L523 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:00,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-06 00:10:00,977 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:00,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1020244142, now seen corresponding path program 59 times [2021-05-06 00:10:00,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:00,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985672956] [2021-05-06 00:10:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:02,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:02,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:02,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985672956] [2021-05-06 00:10:02,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985672956] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:02,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834582746] [2021-05-06 00:10:02,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:02,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-05-06 00:10:02,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:02,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-06 00:10:02,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:02,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:02,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834582746] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:02,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:02,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 68 [2021-05-06 00:10:02,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964693410] [2021-05-06 00:10:02,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-06 00:10:02,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:02,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-06 00:10:02,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1965, Invalid=2591, Unknown=0, NotChecked=0, Total=4556 [2021-05-06 00:10:02,934 INFO L87 Difference]: Start difference. First operand 310 states and 369 transitions. Second operand has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 65 states have internal predecessors, (140), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:06,076 INFO L93 Difference]: Finished difference Result 328 states and 389 transitions. [2021-05-06 00:10:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-06 00:10:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 65 states have internal predecessors, (140), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-06 00:10:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:06,078 INFO L225 Difference]: With dead ends: 328 [2021-05-06 00:10:06,078 INFO L226 Difference]: Without dead ends: 322 [2021-05-06 00:10:06,078 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 3964.4ms TimeCoverageRelationStatistics Valid=5759, Invalid=11011, Unknown=0, NotChecked=0, Total=16770 [2021-05-06 00:10:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-05-06 00:10:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2021-05-06 00:10:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.196774193548387) internal successors, (371), 310 states have internal predecessors, (371), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 375 transitions. [2021-05-06 00:10:06,081 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 375 transitions. Word has length 135 [2021-05-06 00:10:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:06,081 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 375 transitions. [2021-05-06 00:10:06,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 65 states have internal predecessors, (140), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 375 transitions. [2021-05-06 00:10:06,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-06 00:10:06,082 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:06,082 INFO L523 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:06,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:06,283 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:06,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:06,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1560572787, now seen corresponding path program 60 times [2021-05-06 00:10:06,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:06,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526754504] [2021-05-06 00:10:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:07,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:07,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526754504] [2021-05-06 00:10:07,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526754504] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:07,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200675972] [2021-05-06 00:10:07,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:08,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-05-06 00:10:08,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:08,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-06 00:10:08,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:08,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:08,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200675972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:08,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:08,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 69 [2021-05-06 00:10:08,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96779770] [2021-05-06 00:10:08,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-06 00:10:08,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:08,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-06 00:10:08,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=2664, Unknown=0, NotChecked=0, Total=4692 [2021-05-06 00:10:08,473 INFO L87 Difference]: Start difference. First operand 315 states and 375 transitions. Second operand has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 66 states have internal predecessors, (142), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:11,701 INFO L93 Difference]: Finished difference Result 333 states and 395 transitions. [2021-05-06 00:10:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-06 00:10:11,701 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 66 states have internal predecessors, (142), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-05-06 00:10:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:11,702 INFO L225 Difference]: With dead ends: 333 [2021-05-06 00:10:11,702 INFO L226 Difference]: Without dead ends: 327 [2021-05-06 00:10:11,703 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 4289.2ms TimeCoverageRelationStatistics Valid=5946, Invalid=11346, Unknown=0, NotChecked=0, Total=17292 [2021-05-06 00:10:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-05-06 00:10:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 320. [2021-05-06 00:10:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.1968253968253968) internal successors, (377), 315 states have internal predecessors, (377), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 381 transitions. [2021-05-06 00:10:11,706 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 381 transitions. Word has length 137 [2021-05-06 00:10:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:11,706 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 381 transitions. [2021-05-06 00:10:11,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 66 states have internal predecessors, (142), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 381 transitions. [2021-05-06 00:10:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-06 00:10:11,706 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:11,707 INFO L523 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:11,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-06 00:10:11,907 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1125357816, now seen corresponding path program 61 times [2021-05-06 00:10:11,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:11,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485849774] [2021-05-06 00:10:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:13,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:13,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485849774] [2021-05-06 00:10:13,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485849774] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:13,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738961175] [2021-05-06 00:10:13,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:13,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-06 00:10:13,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:13,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738961175] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:13,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:13,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 70 [2021-05-06 00:10:13,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768869968] [2021-05-06 00:10:13,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-06 00:10:13,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:13,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-06 00:10:13,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2092, Invalid=2738, Unknown=0, NotChecked=0, Total=4830 [2021-05-06 00:10:13,952 INFO L87 Difference]: Start difference. First operand 320 states and 381 transitions. Second operand has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 67 states have internal predecessors, (144), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:17,259 INFO L93 Difference]: Finished difference Result 338 states and 401 transitions. [2021-05-06 00:10:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-06 00:10:17,259 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 67 states have internal predecessors, (144), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2021-05-06 00:10:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:17,260 INFO L225 Difference]: With dead ends: 338 [2021-05-06 00:10:17,260 INFO L226 Difference]: Without dead ends: 332 [2021-05-06 00:10:17,261 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 4212.4ms TimeCoverageRelationStatistics Valid=6136, Invalid=11686, Unknown=0, NotChecked=0, Total=17822 [2021-05-06 00:10:17,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-05-06 00:10:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 325. [2021-05-06 00:10:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 320 states have (on average 1.196875) internal successors, (383), 320 states have internal predecessors, (383), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 387 transitions. [2021-05-06 00:10:17,263 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 387 transitions. Word has length 139 [2021-05-06 00:10:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:17,263 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 387 transitions. [2021-05-06 00:10:17,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 67 states have internal predecessors, (144), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 387 transitions. [2021-05-06 00:10:17,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-06 00:10:17,264 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:17,264 INFO L523 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:17,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:17,466 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash 504401603, now seen corresponding path program 62 times [2021-05-06 00:10:17,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:17,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140145605] [2021-05-06 00:10:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:19,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:19,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140145605] [2021-05-06 00:10:19,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140145605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:19,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89532430] [2021-05-06 00:10:19,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:19,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:10:19,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:19,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-06 00:10:19,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:19,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:19,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89532430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:19,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:19,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 71 [2021-05-06 00:10:19,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727295514] [2021-05-06 00:10:19,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-06 00:10:19,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:19,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-06 00:10:19,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2157, Invalid=2813, Unknown=0, NotChecked=0, Total=4970 [2021-05-06 00:10:19,491 INFO L87 Difference]: Start difference. First operand 325 states and 387 transitions. Second operand has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 68 states have internal predecessors, (146), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:22,939 INFO L93 Difference]: Finished difference Result 343 states and 407 transitions. [2021-05-06 00:10:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-06 00:10:22,939 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 68 states have internal predecessors, (146), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-06 00:10:22,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:22,940 INFO L225 Difference]: With dead ends: 343 [2021-05-06 00:10:22,940 INFO L226 Difference]: Without dead ends: 337 [2021-05-06 00:10:22,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2706 ImplicationChecksByTransitivity, 4386.8ms TimeCoverageRelationStatistics Valid=6329, Invalid=12031, Unknown=0, NotChecked=0, Total=18360 [2021-05-06 00:10:22,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-05-06 00:10:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 330. [2021-05-06 00:10:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 325 states have (on average 1.196923076923077) internal successors, (389), 325 states have internal predecessors, (389), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 393 transitions. [2021-05-06 00:10:22,944 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 393 transitions. Word has length 141 [2021-05-06 00:10:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:22,944 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 393 transitions. [2021-05-06 00:10:22,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 68 states have internal predecessors, (146), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 393 transitions. [2021-05-06 00:10:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-06 00:10:22,945 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:22,945 INFO L523 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:23,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-06 00:10:23,149 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:23,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:23,149 INFO L82 PathProgramCache]: Analyzing trace with hash -959859778, now seen corresponding path program 63 times [2021-05-06 00:10:23,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:23,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563773819] [2021-05-06 00:10:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:24,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:24,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:24,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563773819] [2021-05-06 00:10:24,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563773819] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:24,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140423914] [2021-05-06 00:10:24,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:24,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-05-06 00:10:24,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:24,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-06 00:10:24,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:25,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:25,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140423914] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:25,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:25,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 72 [2021-05-06 00:10:25,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857757398] [2021-05-06 00:10:25,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-06 00:10:25,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:25,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-06 00:10:25,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2223, Invalid=2889, Unknown=0, NotChecked=0, Total=5112 [2021-05-06 00:10:25,321 INFO L87 Difference]: Start difference. First operand 330 states and 393 transitions. Second operand has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 69 states have internal predecessors, (148), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:28,792 INFO L93 Difference]: Finished difference Result 348 states and 413 transitions. [2021-05-06 00:10:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-06 00:10:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 69 states have internal predecessors, (148), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-06 00:10:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:28,794 INFO L225 Difference]: With dead ends: 348 [2021-05-06 00:10:28,794 INFO L226 Difference]: Without dead ends: 342 [2021-05-06 00:10:28,794 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 4410.8ms TimeCoverageRelationStatistics Valid=6525, Invalid=12381, Unknown=0, NotChecked=0, Total=18906 [2021-05-06 00:10:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-05-06 00:10:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 335. [2021-05-06 00:10:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.196969696969697) internal successors, (395), 330 states have internal predecessors, (395), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 399 transitions. [2021-05-06 00:10:28,797 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 399 transitions. Word has length 143 [2021-05-06 00:10:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:28,797 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 399 transitions. [2021-05-06 00:10:28,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 69 states have internal predecessors, (148), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 399 transitions. [2021-05-06 00:10:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-06 00:10:28,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:28,799 INFO L523 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:29,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:29,012 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 634226169, now seen corresponding path program 64 times [2021-05-06 00:10:29,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:29,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749750545] [2021-05-06 00:10:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:30,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:30,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749750545] [2021-05-06 00:10:30,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749750545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:30,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521893997] [2021-05-06 00:10:30,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:30,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:10:30,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:30,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-06 00:10:30,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:30,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:30,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:31,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521893997] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:31,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:31,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 73 [2021-05-06 00:10:31,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680106994] [2021-05-06 00:10:31,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-06 00:10:31,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:31,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-06 00:10:31,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2290, Invalid=2966, Unknown=0, NotChecked=0, Total=5256 [2021-05-06 00:10:31,238 INFO L87 Difference]: Start difference. First operand 335 states and 399 transitions. Second operand has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 70 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:34,869 INFO L93 Difference]: Finished difference Result 353 states and 419 transitions. [2021-05-06 00:10:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-06 00:10:34,869 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 70 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-06 00:10:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:34,870 INFO L225 Difference]: With dead ends: 353 [2021-05-06 00:10:34,870 INFO L226 Difference]: Without dead ends: 347 [2021-05-06 00:10:34,871 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 4627.3ms TimeCoverageRelationStatistics Valid=6724, Invalid=12736, Unknown=0, NotChecked=0, Total=19460 [2021-05-06 00:10:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-05-06 00:10:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 340. [2021-05-06 00:10:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 335 states have (on average 1.1970149253731344) internal successors, (401), 335 states have internal predecessors, (401), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 405 transitions. [2021-05-06 00:10:34,874 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 405 transitions. Word has length 145 [2021-05-06 00:10:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:34,874 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 405 transitions. [2021-05-06 00:10:34,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 70 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 405 transitions. [2021-05-06 00:10:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-06 00:10:34,875 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:34,875 INFO L523 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:35,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-06 00:10:35,075 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash -752503436, now seen corresponding path program 65 times [2021-05-06 00:10:35,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:35,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295321706] [2021-05-06 00:10:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:36,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:36,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295321706] [2021-05-06 00:10:36,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295321706] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:36,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825554213] [2021-05-06 00:10:36,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:37,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-06 00:10:37,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:37,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-06 00:10:37,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:37,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:37,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825554213] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:37,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:37,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 74 [2021-05-06 00:10:37,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507224113] [2021-05-06 00:10:37,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-06 00:10:37,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:37,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-06 00:10:37,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2358, Invalid=3044, Unknown=0, NotChecked=0, Total=5402 [2021-05-06 00:10:37,311 INFO L87 Difference]: Start difference. First operand 340 states and 405 transitions. Second operand has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 71 states have internal predecessors, (152), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:40,940 INFO L93 Difference]: Finished difference Result 358 states and 425 transitions. [2021-05-06 00:10:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-06 00:10:40,941 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 71 states have internal predecessors, (152), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2021-05-06 00:10:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:40,942 INFO L225 Difference]: With dead ends: 358 [2021-05-06 00:10:40,942 INFO L226 Difference]: Without dead ends: 352 [2021-05-06 00:10:40,943 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 4693.2ms TimeCoverageRelationStatistics Valid=6926, Invalid=13096, Unknown=0, NotChecked=0, Total=20022 [2021-05-06 00:10:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-05-06 00:10:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-05-06 00:10:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 340 states have (on average 1.1970588235294117) internal successors, (407), 340 states have internal predecessors, (407), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 411 transitions. [2021-05-06 00:10:40,946 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 411 transitions. Word has length 147 [2021-05-06 00:10:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:40,947 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 411 transitions. [2021-05-06 00:10:40,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 71 states have internal predecessors, (152), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 411 transitions. [2021-05-06 00:10:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-06 00:10:40,947 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:40,948 INFO L523 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:41,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-06 00:10:41,153 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1959792081, now seen corresponding path program 66 times [2021-05-06 00:10:41,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:41,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217801709] [2021-05-06 00:10:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:42,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:42,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217801709] [2021-05-06 00:10:42,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217801709] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:42,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798172760] [2021-05-06 00:10:42,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:43,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-05-06 00:10:43,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:43,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-06 00:10:43,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:43,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:43,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798172760] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:43,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:43,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 75 [2021-05-06 00:10:43,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494184607] [2021-05-06 00:10:43,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-06 00:10:43,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:43,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-06 00:10:43,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2427, Invalid=3123, Unknown=0, NotChecked=0, Total=5550 [2021-05-06 00:10:43,462 INFO L87 Difference]: Start difference. First operand 345 states and 411 transitions. Second operand has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 72 states have internal predecessors, (154), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:47,315 INFO L93 Difference]: Finished difference Result 363 states and 431 transitions. [2021-05-06 00:10:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-06 00:10:47,315 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 72 states have internal predecessors, (154), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-06 00:10:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:47,316 INFO L225 Difference]: With dead ends: 363 [2021-05-06 00:10:47,317 INFO L226 Difference]: Without dead ends: 357 [2021-05-06 00:10:47,317 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3012 ImplicationChecksByTransitivity, 4869.0ms TimeCoverageRelationStatistics Valid=7131, Invalid=13461, Unknown=0, NotChecked=0, Total=20592 [2021-05-06 00:10:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-05-06 00:10:47,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 350. [2021-05-06 00:10:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 345 states have (on average 1.1971014492753622) internal successors, (413), 345 states have internal predecessors, (413), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 417 transitions. [2021-05-06 00:10:47,321 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 417 transitions. Word has length 149 [2021-05-06 00:10:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:47,321 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 417 transitions. [2021-05-06 00:10:47,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 72 states have internal predecessors, (154), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 417 transitions. [2021-05-06 00:10:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-06 00:10:47,322 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:47,322 INFO L523 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:47,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-06 00:10:47,538 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:47,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1771957290, now seen corresponding path program 67 times [2021-05-06 00:10:47,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:47,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54238715] [2021-05-06 00:10:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:49,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:49,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54238715] [2021-05-06 00:10:49,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54238715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:49,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885912267] [2021-05-06 00:10:49,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:49,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-06 00:10:49,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:49,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885912267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:49,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:49,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 76 [2021-05-06 00:10:49,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775268122] [2021-05-06 00:10:49,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-06 00:10:49,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:49,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-06 00:10:49,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=3203, Unknown=0, NotChecked=0, Total=5700 [2021-05-06 00:10:49,865 INFO L87 Difference]: Start difference. First operand 350 states and 417 transitions. Second operand has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 73 states have internal predecessors, (156), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:10:53,724 INFO L93 Difference]: Finished difference Result 368 states and 437 transitions. [2021-05-06 00:10:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-06 00:10:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 73 states have internal predecessors, (156), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-06 00:10:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:10:53,726 INFO L225 Difference]: With dead ends: 368 [2021-05-06 00:10:53,726 INFO L226 Difference]: Without dead ends: 362 [2021-05-06 00:10:53,727 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3091 ImplicationChecksByTransitivity, 4939.5ms TimeCoverageRelationStatistics Valid=7339, Invalid=13831, Unknown=0, NotChecked=0, Total=21170 [2021-05-06 00:10:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-05-06 00:10:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 355. [2021-05-06 00:10:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 350 states have (on average 1.197142857142857) internal successors, (419), 350 states have internal predecessors, (419), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 423 transitions. [2021-05-06 00:10:53,729 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 423 transitions. Word has length 151 [2021-05-06 00:10:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:10:53,729 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 423 transitions. [2021-05-06 00:10:53,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 73 states have internal predecessors, (156), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:10:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 423 transitions. [2021-05-06 00:10:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-06 00:10:53,730 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:10:53,730 INFO L523 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:10:53,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:53,931 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:10:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:10:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1685410661, now seen corresponding path program 68 times [2021-05-06 00:10:53,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:10:53,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443833582] [2021-05-06 00:10:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:10:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:10:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:10:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:55,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:10:55,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443833582] [2021-05-06 00:10:55,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443833582] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:55,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578524105] [2021-05-06 00:10:55,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:10:55,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:10:55,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:10:55,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-06 00:10:55,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:10:55,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:55,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:10:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:10:56,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578524105] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:10:56,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:10:56,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 77 [2021-05-06 00:10:56,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591964315] [2021-05-06 00:10:56,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-06 00:10:56,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:10:56,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-06 00:10:56,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2568, Invalid=3284, Unknown=0, NotChecked=0, Total=5852 [2021-05-06 00:10:56,302 INFO L87 Difference]: Start difference. First operand 355 states and 423 transitions. Second operand has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 74 states have internal predecessors, (158), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:00,431 INFO L93 Difference]: Finished difference Result 373 states and 443 transitions. [2021-05-06 00:11:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-06 00:11:00,431 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 74 states have internal predecessors, (158), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-06 00:11:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:00,432 INFO L225 Difference]: With dead ends: 373 [2021-05-06 00:11:00,432 INFO L226 Difference]: Without dead ends: 367 [2021-05-06 00:11:00,433 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 5157.4ms TimeCoverageRelationStatistics Valid=7550, Invalid=14206, Unknown=0, NotChecked=0, Total=21756 [2021-05-06 00:11:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-05-06 00:11:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 360. [2021-05-06 00:11:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 355 states have (on average 1.1971830985915493) internal successors, (425), 355 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 429 transitions. [2021-05-06 00:11:00,436 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 429 transitions. Word has length 153 [2021-05-06 00:11:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:00,436 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 429 transitions. [2021-05-06 00:11:00,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 74 states have internal predecessors, (158), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 429 transitions. [2021-05-06 00:11:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-06 00:11:00,437 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:00,437 INFO L523 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:00,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-06 00:11:00,637 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:00,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:00,638 INFO L82 PathProgramCache]: Analyzing trace with hash 118478816, now seen corresponding path program 69 times [2021-05-06 00:11:00,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:00,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659185478] [2021-05-06 00:11:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:02,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:02,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659185478] [2021-05-06 00:11:02,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659185478] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:02,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994092739] [2021-05-06 00:11:02,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:02,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-06 00:11:02,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:11:02,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-06 00:11:02,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:02,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:02,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:03,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994092739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:03,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:03,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 78 [2021-05-06 00:11:03,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704349963] [2021-05-06 00:11:03,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-06 00:11:03,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:03,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-06 00:11:03,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2640, Invalid=3366, Unknown=0, NotChecked=0, Total=6006 [2021-05-06 00:11:03,095 INFO L87 Difference]: Start difference. First operand 360 states and 429 transitions. Second operand has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 75 states have internal predecessors, (160), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:07,233 INFO L93 Difference]: Finished difference Result 378 states and 449 transitions. [2021-05-06 00:11:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-06 00:11:07,234 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 75 states have internal predecessors, (160), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-05-06 00:11:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:07,235 INFO L225 Difference]: With dead ends: 378 [2021-05-06 00:11:07,235 INFO L226 Difference]: Without dead ends: 372 [2021-05-06 00:11:07,236 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 5192.3ms TimeCoverageRelationStatistics Valid=7764, Invalid=14586, Unknown=0, NotChecked=0, Total=22350 [2021-05-06 00:11:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-05-06 00:11:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 365. [2021-05-06 00:11:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 360 states have (on average 1.1972222222222222) internal successors, (431), 360 states have internal predecessors, (431), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 435 transitions. [2021-05-06 00:11:07,239 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 435 transitions. Word has length 155 [2021-05-06 00:11:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:07,239 INFO L480 AbstractCegarLoop]: Abstraction has 365 states and 435 transitions. [2021-05-06 00:11:07,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 75 states have internal predecessors, (160), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 435 transitions. [2021-05-06 00:11:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-06 00:11:07,240 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:07,240 INFO L523 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:07,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:07,451 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:07,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1830496667, now seen corresponding path program 70 times [2021-05-06 00:11:07,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:07,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789152704] [2021-05-06 00:11:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:09,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:09,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:09,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789152704] [2021-05-06 00:11:09,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789152704] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:09,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526850747] [2021-05-06 00:11:09,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:09,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:11:09,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:11:09,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-06 00:11:09,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:09,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:09,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526850747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:09,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:09,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 79 [2021-05-06 00:11:09,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383455268] [2021-05-06 00:11:09,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-06 00:11:09,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:09,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-06 00:11:09,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2713, Invalid=3449, Unknown=0, NotChecked=0, Total=6162 [2021-05-06 00:11:09,957 INFO L87 Difference]: Start difference. First operand 365 states and 435 transitions. Second operand has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 76 states have internal predecessors, (162), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:13,989 INFO L93 Difference]: Finished difference Result 383 states and 455 transitions. [2021-05-06 00:11:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-06 00:11:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 76 states have internal predecessors, (162), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-06 00:11:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:13,990 INFO L225 Difference]: With dead ends: 383 [2021-05-06 00:11:13,990 INFO L226 Difference]: Without dead ends: 377 [2021-05-06 00:11:13,991 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3334 ImplicationChecksByTransitivity, 5282.6ms TimeCoverageRelationStatistics Valid=7981, Invalid=14971, Unknown=0, NotChecked=0, Total=22952 [2021-05-06 00:11:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-05-06 00:11:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 370. [2021-05-06 00:11:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 365 states have (on average 1.1972602739726028) internal successors, (437), 365 states have internal predecessors, (437), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 441 transitions. [2021-05-06 00:11:13,995 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 441 transitions. Word has length 157 [2021-05-06 00:11:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:13,995 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 441 transitions. [2021-05-06 00:11:13,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 76 states have internal predecessors, (162), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:13,995 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 441 transitions. [2021-05-06 00:11:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-06 00:11:13,996 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:13,996 INFO L523 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:14,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-05-06 00:11:14,217 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:14,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2107177110, now seen corresponding path program 71 times [2021-05-06 00:11:14,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:14,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754287294] [2021-05-06 00:11:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:16,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:16,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754287294] [2021-05-06 00:11:16,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754287294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:16,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717164213] [2021-05-06 00:11:16,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:16,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-05-06 00:11:16,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:11:16,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-06 00:11:16,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:16,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:16,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717164213] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:16,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:16,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 80 [2021-05-06 00:11:16,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150145411] [2021-05-06 00:11:16,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-06 00:11:16,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:16,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-06 00:11:16,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2787, Invalid=3533, Unknown=0, NotChecked=0, Total=6320 [2021-05-06 00:11:16,749 INFO L87 Difference]: Start difference. First operand 370 states and 441 transitions. Second operand has 80 states, 80 states have (on average 2.05) internal successors, (164), 77 states have internal predecessors, (164), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:21,197 INFO L93 Difference]: Finished difference Result 388 states and 461 transitions. [2021-05-06 00:11:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-06 00:11:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.05) internal successors, (164), 77 states have internal predecessors, (164), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-06 00:11:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:21,198 INFO L225 Difference]: With dead ends: 388 [2021-05-06 00:11:21,198 INFO L226 Difference]: Without dead ends: 382 [2021-05-06 00:11:21,199 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3417 ImplicationChecksByTransitivity, 5559.8ms TimeCoverageRelationStatistics Valid=8201, Invalid=15361, Unknown=0, NotChecked=0, Total=23562 [2021-05-06 00:11:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-05-06 00:11:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 375. [2021-05-06 00:11:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 370 states have (on average 1.1972972972972973) internal successors, (443), 370 states have internal predecessors, (443), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 447 transitions. [2021-05-06 00:11:21,202 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 447 transitions. Word has length 159 [2021-05-06 00:11:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:21,202 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 447 transitions. [2021-05-06 00:11:21,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.05) internal successors, (164), 77 states have internal predecessors, (164), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 447 transitions. [2021-05-06 00:11:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-06 00:11:21,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:21,203 INFO L523 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:21,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:21,404 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1709110481, now seen corresponding path program 72 times [2021-05-06 00:11:21,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:21,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32706521] [2021-05-06 00:11:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:23,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:23,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32706521] [2021-05-06 00:11:23,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32706521] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:23,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880303596] [2021-05-06 00:11:23,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:23,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-05-06 00:11:23,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:11:23,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-06 00:11:23,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:23,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:23,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:24,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880303596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:24,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:24,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 81 [2021-05-06 00:11:24,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598744391] [2021-05-06 00:11:24,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-06 00:11:24,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:24,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-06 00:11:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2862, Invalid=3618, Unknown=0, NotChecked=0, Total=6480 [2021-05-06 00:11:24,101 INFO L87 Difference]: Start difference. First operand 375 states and 447 transitions. Second operand has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 78 states have internal predecessors, (166), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:28,363 INFO L93 Difference]: Finished difference Result 393 states and 467 transitions. [2021-05-06 00:11:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-06 00:11:28,363 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 78 states have internal predecessors, (166), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-05-06 00:11:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:28,364 INFO L225 Difference]: With dead ends: 393 [2021-05-06 00:11:28,364 INFO L226 Difference]: Without dead ends: 387 [2021-05-06 00:11:28,365 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3501 ImplicationChecksByTransitivity, 5549.3ms TimeCoverageRelationStatistics Valid=8424, Invalid=15756, Unknown=0, NotChecked=0, Total=24180 [2021-05-06 00:11:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-05-06 00:11:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 380. [2021-05-06 00:11:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 375 states have (on average 1.1973333333333334) internal successors, (449), 375 states have internal predecessors, (449), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:28,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 453 transitions. [2021-05-06 00:11:28,368 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 453 transitions. Word has length 161 [2021-05-06 00:11:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:28,368 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 453 transitions. [2021-05-06 00:11:28,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 78 states have internal predecessors, (166), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 453 transitions. [2021-05-06 00:11:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-06 00:11:28,369 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:28,369 INFO L523 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:28,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:28,578 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:28,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1419169356, now seen corresponding path program 73 times [2021-05-06 00:11:28,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:28,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605647348] [2021-05-06 00:11:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:30,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:30,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605647348] [2021-05-06 00:11:30,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605647348] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:30,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635310889] [2021-05-06 00:11:30,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:30,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-06 00:11:30,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:30,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:30,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:31,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635310889] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:31,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:31,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 82 [2021-05-06 00:11:31,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908917886] [2021-05-06 00:11:31,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-06 00:11:31,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:31,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-06 00:11:31,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2938, Invalid=3704, Unknown=0, NotChecked=0, Total=6642 [2021-05-06 00:11:31,241 INFO L87 Difference]: Start difference. First operand 380 states and 453 transitions. Second operand has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 79 states have internal predecessors, (168), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:35,491 INFO L93 Difference]: Finished difference Result 398 states and 473 transitions. [2021-05-06 00:11:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-06 00:11:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 79 states have internal predecessors, (168), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2021-05-06 00:11:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:35,493 INFO L225 Difference]: With dead ends: 398 [2021-05-06 00:11:35,493 INFO L226 Difference]: Without dead ends: 392 [2021-05-06 00:11:35,494 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3586 ImplicationChecksByTransitivity, 5674.3ms TimeCoverageRelationStatistics Valid=8650, Invalid=16156, Unknown=0, NotChecked=0, Total=24806 [2021-05-06 00:11:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-05-06 00:11:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 385. [2021-05-06 00:11:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 380 states have (on average 1.1973684210526316) internal successors, (455), 380 states have internal predecessors, (455), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:35,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 459 transitions. [2021-05-06 00:11:35,497 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 459 transitions. Word has length 163 [2021-05-06 00:11:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:35,497 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 459 transitions. [2021-05-06 00:11:35,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 79 states have internal predecessors, (168), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:35,497 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 459 transitions. [2021-05-06 00:11:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-06 00:11:35,497 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:35,498 INFO L523 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:35,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:35,698 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:35,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1958622471, now seen corresponding path program 74 times [2021-05-06 00:11:35,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:35,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561430308] [2021-05-06 00:11:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:37,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:37,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:37,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561430308] [2021-05-06 00:11:37,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561430308] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:37,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910028134] [2021-05-06 00:11:37,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:38,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:11:38,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:11:38,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-06 00:11:38,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:38,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:38,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910028134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:38,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:38,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 83 [2021-05-06 00:11:38,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67219597] [2021-05-06 00:11:38,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-06 00:11:38,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:38,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-06 00:11:38,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3015, Invalid=3791, Unknown=0, NotChecked=0, Total=6806 [2021-05-06 00:11:38,420 INFO L87 Difference]: Start difference. First operand 385 states and 459 transitions. Second operand has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 80 states have internal predecessors, (170), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:42,923 INFO L93 Difference]: Finished difference Result 403 states and 479 transitions. [2021-05-06 00:11:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-06 00:11:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 80 states have internal predecessors, (170), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-06 00:11:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:42,924 INFO L225 Difference]: With dead ends: 403 [2021-05-06 00:11:42,924 INFO L226 Difference]: Without dead ends: 397 [2021-05-06 00:11:42,925 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 5833.5ms TimeCoverageRelationStatistics Valid=8879, Invalid=16561, Unknown=0, NotChecked=0, Total=25440 [2021-05-06 00:11:42,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-05-06 00:11:42,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 390. [2021-05-06 00:11:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 385 states have (on average 1.1974025974025975) internal successors, (461), 385 states have internal predecessors, (461), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 465 transitions. [2021-05-06 00:11:42,928 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 465 transitions. Word has length 165 [2021-05-06 00:11:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:42,928 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 465 transitions. [2021-05-06 00:11:42,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 80 states have internal predecessors, (170), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 465 transitions. [2021-05-06 00:11:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-06 00:11:42,929 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:42,929 INFO L523 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:43,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-05-06 00:11:43,129 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:43,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:43,130 INFO L82 PathProgramCache]: Analyzing trace with hash 682023170, now seen corresponding path program 75 times [2021-05-06 00:11:43,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:43,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222068814] [2021-05-06 00:11:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:45,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:45,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222068814] [2021-05-06 00:11:45,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222068814] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:45,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813124729] [2021-05-06 00:11:45,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:45,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-05-06 00:11:45,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:11:45,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-06 00:11:45,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:45,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:45,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:46,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813124729] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:46,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:46,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 84 [2021-05-06 00:11:46,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129951845] [2021-05-06 00:11:46,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-06 00:11:46,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-06 00:11:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3093, Invalid=3879, Unknown=0, NotChecked=0, Total=6972 [2021-05-06 00:11:46,024 INFO L87 Difference]: Start difference. First operand 390 states and 465 transitions. Second operand has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 81 states have internal predecessors, (172), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:50,656 INFO L93 Difference]: Finished difference Result 408 states and 485 transitions. [2021-05-06 00:11:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-06 00:11:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 81 states have internal predecessors, (172), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-06 00:11:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:50,657 INFO L225 Difference]: With dead ends: 408 [2021-05-06 00:11:50,657 INFO L226 Difference]: Without dead ends: 402 [2021-05-06 00:11:50,658 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 5980.9ms TimeCoverageRelationStatistics Valid=9111, Invalid=16971, Unknown=0, NotChecked=0, Total=26082 [2021-05-06 00:11:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-05-06 00:11:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2021-05-06 00:11:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 390 states have (on average 1.1974358974358974) internal successors, (467), 390 states have internal predecessors, (467), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 471 transitions. [2021-05-06 00:11:50,661 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 471 transitions. Word has length 167 [2021-05-06 00:11:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:50,661 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 471 transitions. [2021-05-06 00:11:50,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 81 states have internal predecessors, (172), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 471 transitions. [2021-05-06 00:11:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-06 00:11:50,662 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:50,662 INFO L523 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:50,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:50,862 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:50,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2064225731, now seen corresponding path program 76 times [2021-05-06 00:11:50,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:50,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697270656] [2021-05-06 00:11:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:11:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:11:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:53,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:11:53,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697270656] [2021-05-06 00:11:53,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697270656] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:53,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554207711] [2021-05-06 00:11:53,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:53,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:11:53,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:11:53,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-06 00:11:53,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:11:53,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:11:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:11:53,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554207711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:11:53,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:11:53,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 85 [2021-05-06 00:11:53,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250020711] [2021-05-06 00:11:53,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-06 00:11:53,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:11:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-06 00:11:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3172, Invalid=3968, Unknown=0, NotChecked=0, Total=7140 [2021-05-06 00:11:53,670 INFO L87 Difference]: Start difference. First operand 395 states and 471 transitions. Second operand has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 82 states have internal predecessors, (174), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:11:58,263 INFO L93 Difference]: Finished difference Result 413 states and 491 transitions. [2021-05-06 00:11:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-06 00:11:58,264 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 82 states have internal predecessors, (174), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-06 00:11:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:11:58,265 INFO L225 Difference]: With dead ends: 413 [2021-05-06 00:11:58,265 INFO L226 Difference]: Without dead ends: 407 [2021-05-06 00:11:58,265 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3847 ImplicationChecksByTransitivity, 6084.8ms TimeCoverageRelationStatistics Valid=9346, Invalid=17386, Unknown=0, NotChecked=0, Total=26732 [2021-05-06 00:11:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-05-06 00:11:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 400. [2021-05-06 00:11:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 395 states have (on average 1.1974683544303797) internal successors, (473), 395 states have internal predecessors, (473), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 477 transitions. [2021-05-06 00:11:58,268 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 477 transitions. Word has length 169 [2021-05-06 00:11:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:11:58,268 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 477 transitions. [2021-05-06 00:11:58,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 82 states have internal predecessors, (174), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:11:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 477 transitions. [2021-05-06 00:11:58,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-06 00:11:58,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:11:58,269 INFO L523 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:11:58,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:11:58,470 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:11:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:11:58,470 INFO L82 PathProgramCache]: Analyzing trace with hash 195467448, now seen corresponding path program 77 times [2021-05-06 00:11:58,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:11:58,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398422404] [2021-05-06 00:11:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:11:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:00,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:00,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:00,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398422404] [2021-05-06 00:12:00,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398422404] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:00,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741401903] [2021-05-06 00:12:00,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:01,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-05-06 00:12:01,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:12:01,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-06 00:12:01,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:12:01,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:01,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741401903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:01,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:12:01,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 86 [2021-05-06 00:12:01,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808139984] [2021-05-06 00:12:01,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-06 00:12:01,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:12:01,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-06 00:12:01,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=4058, Unknown=0, NotChecked=0, Total=7310 [2021-05-06 00:12:01,393 INFO L87 Difference]: Start difference. First operand 400 states and 477 transitions. Second operand has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 83 states have internal predecessors, (176), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:12:06,108 INFO L93 Difference]: Finished difference Result 418 states and 497 transitions. [2021-05-06 00:12:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-06 00:12:06,109 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 83 states have internal predecessors, (176), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2021-05-06 00:12:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:12:06,110 INFO L225 Difference]: With dead ends: 418 [2021-05-06 00:12:06,110 INFO L226 Difference]: Without dead ends: 412 [2021-05-06 00:12:06,111 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3936 ImplicationChecksByTransitivity, 6218.0ms TimeCoverageRelationStatistics Valid=9584, Invalid=17806, Unknown=0, NotChecked=0, Total=27390 [2021-05-06 00:12:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-05-06 00:12:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 405. [2021-05-06 00:12:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 400 states have (on average 1.1975) internal successors, (479), 400 states have internal predecessors, (479), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 483 transitions. [2021-05-06 00:12:06,114 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 483 transitions. Word has length 171 [2021-05-06 00:12:06,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:12:06,114 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 483 transitions. [2021-05-06 00:12:06,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 83 states have internal predecessors, (176), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:06,114 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 483 transitions. [2021-05-06 00:12:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-06 00:12:06,115 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:12:06,115 INFO L523 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:12:06,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-06 00:12:06,315 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:12:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:12:06,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1492839309, now seen corresponding path program 78 times [2021-05-06 00:12:06,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:12:06,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952612725] [2021-05-06 00:12:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:12:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:08,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:08,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952612725] [2021-05-06 00:12:08,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952612725] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:08,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203147927] [2021-05-06 00:12:08,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:08,968 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-06 00:12:08,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:12:08,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-06 00:12:08,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:12:08,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:08,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:08,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:08,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:08,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:08,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:09,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203147927] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:09,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:12:09,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 87 [2021-05-06 00:12:09,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223362828] [2021-05-06 00:12:09,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-06 00:12:09,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:12:09,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-06 00:12:09,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3333, Invalid=4149, Unknown=0, NotChecked=0, Total=7482 [2021-05-06 00:12:09,321 INFO L87 Difference]: Start difference. First operand 405 states and 483 transitions. Second operand has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 84 states have internal predecessors, (178), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:12:14,154 INFO L93 Difference]: Finished difference Result 423 states and 503 transitions. [2021-05-06 00:12:14,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-06 00:12:14,154 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 84 states have internal predecessors, (178), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-06 00:12:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:12:14,155 INFO L225 Difference]: With dead ends: 423 [2021-05-06 00:12:14,155 INFO L226 Difference]: Without dead ends: 417 [2021-05-06 00:12:14,156 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4026 ImplicationChecksByTransitivity, 6356.5ms TimeCoverageRelationStatistics Valid=9825, Invalid=18231, Unknown=0, NotChecked=0, Total=28056 [2021-05-06 00:12:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-05-06 00:12:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 410. [2021-05-06 00:12:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 405 states have (on average 1.1975308641975309) internal successors, (485), 405 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 489 transitions. [2021-05-06 00:12:14,159 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 489 transitions. Word has length 173 [2021-05-06 00:12:14,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:12:14,159 INFO L480 AbstractCegarLoop]: Abstraction has 410 states and 489 transitions. [2021-05-06 00:12:14,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 84 states have internal predecessors, (178), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:14,159 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 489 transitions. [2021-05-06 00:12:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-06 00:12:14,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:12:14,160 INFO L523 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:12:14,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-06 00:12:14,377 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:12:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:12:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash -457994898, now seen corresponding path program 79 times [2021-05-06 00:12:14,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:12:14,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124598702] [2021-05-06 00:12:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:12:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:16,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:16,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124598702] [2021-05-06 00:12:16,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124598702] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:16,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624076894] [2021-05-06 00:12:16,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:17,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-06 00:12:17,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:12:17,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:17,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624076894] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:17,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:12:17,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 88 [2021-05-06 00:12:17,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588673339] [2021-05-06 00:12:17,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-06 00:12:17,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:12:17,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-06 00:12:17,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3415, Invalid=4241, Unknown=0, NotChecked=0, Total=7656 [2021-05-06 00:12:17,369 INFO L87 Difference]: Start difference. First operand 410 states and 489 transitions. Second operand has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 85 states have internal predecessors, (180), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:22,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:12:22,307 INFO L93 Difference]: Finished difference Result 428 states and 509 transitions. [2021-05-06 00:12:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-06 00:12:22,307 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 85 states have internal predecessors, (180), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-06 00:12:22,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:12:22,308 INFO L225 Difference]: With dead ends: 428 [2021-05-06 00:12:22,308 INFO L226 Difference]: Without dead ends: 422 [2021-05-06 00:12:22,309 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4117 ImplicationChecksByTransitivity, 6502.6ms TimeCoverageRelationStatistics Valid=10069, Invalid=18661, Unknown=0, NotChecked=0, Total=28730 [2021-05-06 00:12:22,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-05-06 00:12:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 415. [2021-05-06 00:12:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 410 states have (on average 1.197560975609756) internal successors, (491), 410 states have internal predecessors, (491), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 495 transitions. [2021-05-06 00:12:22,312 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 495 transitions. Word has length 175 [2021-05-06 00:12:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:12:22,312 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 495 transitions. [2021-05-06 00:12:22,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 85 states have internal predecessors, (180), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 495 transitions. [2021-05-06 00:12:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-06 00:12:22,313 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:12:22,313 INFO L523 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:12:22,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:22,514 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:12:22,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:12:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1890038697, now seen corresponding path program 80 times [2021-05-06 00:12:22,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:12:22,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614612969] [2021-05-06 00:12:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:12:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:25,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:25,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614612969] [2021-05-06 00:12:25,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614612969] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:25,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495560821] [2021-05-06 00:12:25,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:25,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:12:25,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:12:25,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-06 00:12:25,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:12:25,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:25,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495560821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:25,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:12:25,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 89 [2021-05-06 00:12:25,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163575691] [2021-05-06 00:12:25,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-06 00:12:25,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:12:25,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-06 00:12:25,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3498, Invalid=4334, Unknown=0, NotChecked=0, Total=7832 [2021-05-06 00:12:25,561 INFO L87 Difference]: Start difference. First operand 415 states and 495 transitions. Second operand has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 86 states have internal predecessors, (182), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:12:30,560 INFO L93 Difference]: Finished difference Result 433 states and 515 transitions. [2021-05-06 00:12:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-06 00:12:30,561 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 86 states have internal predecessors, (182), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-06 00:12:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:12:30,562 INFO L225 Difference]: With dead ends: 433 [2021-05-06 00:12:30,562 INFO L226 Difference]: Without dead ends: 427 [2021-05-06 00:12:30,563 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4209 ImplicationChecksByTransitivity, 6609.9ms TimeCoverageRelationStatistics Valid=10316, Invalid=19096, Unknown=0, NotChecked=0, Total=29412 [2021-05-06 00:12:30,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-05-06 00:12:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2021-05-06 00:12:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 415 states have (on average 1.1975903614457832) internal successors, (497), 415 states have internal predecessors, (497), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 501 transitions. [2021-05-06 00:12:30,566 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 501 transitions. Word has length 177 [2021-05-06 00:12:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:12:30,566 INFO L480 AbstractCegarLoop]: Abstraction has 420 states and 501 transitions. [2021-05-06 00:12:30,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 86 states have internal predecessors, (182), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 501 transitions. [2021-05-06 00:12:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-06 00:12:30,567 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:12:30,567 INFO L523 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:12:30,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:30,768 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:12:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:12:30,768 INFO L82 PathProgramCache]: Analyzing trace with hash -802474204, now seen corresponding path program 81 times [2021-05-06 00:12:30,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:12:30,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273672986] [2021-05-06 00:12:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:12:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:33,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:33,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:33,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273672986] [2021-05-06 00:12:33,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273672986] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:33,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445654118] [2021-05-06 00:12:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:33,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2021-05-06 00:12:33,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:12:33,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-06 00:12:33,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:12:33,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:33,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445654118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:33,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:12:33,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 90 [2021-05-06 00:12:33,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034337166] [2021-05-06 00:12:33,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-06 00:12:33,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:12:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-06 00:12:33,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3582, Invalid=4428, Unknown=0, NotChecked=0, Total=8010 [2021-05-06 00:12:33,972 INFO L87 Difference]: Start difference. First operand 420 states and 501 transitions. Second operand has 90 states, 90 states have (on average 2.0444444444444443) internal successors, (184), 87 states have internal predecessors, (184), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:12:39,155 INFO L93 Difference]: Finished difference Result 438 states and 521 transitions. [2021-05-06 00:12:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-06 00:12:39,155 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0444444444444443) internal successors, (184), 87 states have internal predecessors, (184), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-06 00:12:39,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:12:39,156 INFO L225 Difference]: With dead ends: 438 [2021-05-06 00:12:39,156 INFO L226 Difference]: Without dead ends: 432 [2021-05-06 00:12:39,157 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4302 ImplicationChecksByTransitivity, 6837.5ms TimeCoverageRelationStatistics Valid=10566, Invalid=19536, Unknown=0, NotChecked=0, Total=30102 [2021-05-06 00:12:39,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-05-06 00:12:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 425. [2021-05-06 00:12:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 1.1976190476190476) internal successors, (503), 420 states have internal predecessors, (503), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 507 transitions. [2021-05-06 00:12:39,160 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 507 transitions. Word has length 179 [2021-05-06 00:12:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:12:39,160 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 507 transitions. [2021-05-06 00:12:39,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.0444444444444443) internal successors, (184), 87 states have internal predecessors, (184), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 507 transitions. [2021-05-06 00:12:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-06 00:12:39,161 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:12:39,161 INFO L523 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:12:39,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:39,362 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:12:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:12:39,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1557907423, now seen corresponding path program 82 times [2021-05-06 00:12:39,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:12:39,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952536469] [2021-05-06 00:12:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:12:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:42,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:42,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952536469] [2021-05-06 00:12:42,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952536469] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:42,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905909333] [2021-05-06 00:12:42,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:42,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:12:42,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:12:42,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-06 00:12:42,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:12:42,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:42,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905909333] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:42,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:12:42,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 91 [2021-05-06 00:12:42,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328378770] [2021-05-06 00:12:42,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-06 00:12:42,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:12:42,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-06 00:12:42,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3667, Invalid=4523, Unknown=0, NotChecked=0, Total=8190 [2021-05-06 00:12:42,565 INFO L87 Difference]: Start difference. First operand 425 states and 507 transitions. Second operand has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 88 states have internal predecessors, (186), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:47,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:12:47,814 INFO L93 Difference]: Finished difference Result 443 states and 527 transitions. [2021-05-06 00:12:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-06 00:12:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 88 states have internal predecessors, (186), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-06 00:12:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:12:47,815 INFO L225 Difference]: With dead ends: 443 [2021-05-06 00:12:47,816 INFO L226 Difference]: Without dead ends: 437 [2021-05-06 00:12:47,817 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4396 ImplicationChecksByTransitivity, 6975.2ms TimeCoverageRelationStatistics Valid=10819, Invalid=19981, Unknown=0, NotChecked=0, Total=30800 [2021-05-06 00:12:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-05-06 00:12:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2021-05-06 00:12:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 425 states have (on average 1.1976470588235295) internal successors, (509), 425 states have internal predecessors, (509), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 513 transitions. [2021-05-06 00:12:47,820 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 513 transitions. Word has length 181 [2021-05-06 00:12:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:12:47,820 INFO L480 AbstractCegarLoop]: Abstraction has 430 states and 513 transitions. [2021-05-06 00:12:47,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 88 states have internal predecessors, (186), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 513 transitions. [2021-05-06 00:12:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-06 00:12:47,821 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:12:47,821 INFO L523 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:12:48,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:48,021 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:12:48,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:12:48,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2141918682, now seen corresponding path program 83 times [2021-05-06 00:12:48,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:12:48,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274866422] [2021-05-06 00:12:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:12:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:50,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:50,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274866422] [2021-05-06 00:12:50,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274866422] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:50,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175615743] [2021-05-06 00:12:50,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:50,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2021-05-06 00:12:50,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:12:50,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-06 00:12:50,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:12:50,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:50,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:50,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:50,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:12:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:51,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175615743] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:51,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:12:51,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 92 [2021-05-06 00:12:51,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340443097] [2021-05-06 00:12:51,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-06 00:12:51,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:12:51,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-06 00:12:51,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3753, Invalid=4619, Unknown=0, NotChecked=0, Total=8372 [2021-05-06 00:12:51,366 INFO L87 Difference]: Start difference. First operand 430 states and 513 transitions. Second operand has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 89 states have internal predecessors, (188), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:12:56,735 INFO L93 Difference]: Finished difference Result 448 states and 533 transitions. [2021-05-06 00:12:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-06 00:12:56,735 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 89 states have internal predecessors, (188), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-06 00:12:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:12:56,737 INFO L225 Difference]: With dead ends: 448 [2021-05-06 00:12:56,737 INFO L226 Difference]: Without dead ends: 442 [2021-05-06 00:12:56,737 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4491 ImplicationChecksByTransitivity, 7097.3ms TimeCoverageRelationStatistics Valid=11075, Invalid=20431, Unknown=0, NotChecked=0, Total=31506 [2021-05-06 00:12:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-05-06 00:12:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 435. [2021-05-06 00:12:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 430 states have (on average 1.197674418604651) internal successors, (515), 430 states have internal predecessors, (515), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 519 transitions. [2021-05-06 00:12:56,741 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 519 transitions. Word has length 183 [2021-05-06 00:12:56,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:12:56,742 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 519 transitions. [2021-05-06 00:12:56,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 89 states have internal predecessors, (188), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:12:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 519 transitions. [2021-05-06 00:12:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-06 00:12:56,743 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:12:56,743 INFO L523 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:12:56,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:12:56,966 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:12:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:12:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash 736022805, now seen corresponding path program 84 times [2021-05-06 00:12:56,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:12:56,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947441672] [2021-05-06 00:12:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:12:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:59,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:12:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:12:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:12:59,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:12:59,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947441672] [2021-05-06 00:12:59,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947441672] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:12:59,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398899589] [2021-05-06 00:12:59,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:00,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2021-05-06 00:13:00,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:13:00,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-06 00:13:00,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:13:00,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:00,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398899589] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:00,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:13:00,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 93 [2021-05-06 00:13:00,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429397904] [2021-05-06 00:13:00,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-06 00:13:00,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:13:00,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-06 00:13:00,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3840, Invalid=4716, Unknown=0, NotChecked=0, Total=8556 [2021-05-06 00:13:00,390 INFO L87 Difference]: Start difference. First operand 435 states and 519 transitions. Second operand has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 90 states have internal predecessors, (190), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:13:05,863 INFO L93 Difference]: Finished difference Result 453 states and 539 transitions. [2021-05-06 00:13:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-06 00:13:05,864 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 90 states have internal predecessors, (190), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2021-05-06 00:13:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:13:05,865 INFO L225 Difference]: With dead ends: 453 [2021-05-06 00:13:05,865 INFO L226 Difference]: Without dead ends: 447 [2021-05-06 00:13:05,867 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4587 ImplicationChecksByTransitivity, 7259.3ms TimeCoverageRelationStatistics Valid=11334, Invalid=20886, Unknown=0, NotChecked=0, Total=32220 [2021-05-06 00:13:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-05-06 00:13:05,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 440. [2021-05-06 00:13:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 435 states have (on average 1.1977011494252874) internal successors, (521), 435 states have internal predecessors, (521), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 525 transitions. [2021-05-06 00:13:05,870 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 525 transitions. Word has length 185 [2021-05-06 00:13:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:13:05,871 INFO L480 AbstractCegarLoop]: Abstraction has 440 states and 525 transitions. [2021-05-06 00:13:05,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 90 states have internal predecessors, (190), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 525 transitions. [2021-05-06 00:13:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-06 00:13:05,872 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:13:05,872 INFO L523 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:13:06,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-05-06 00:13:06,096 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:13:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:13:06,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1710184048, now seen corresponding path program 85 times [2021-05-06 00:13:06,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:13:06,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448863762] [2021-05-06 00:13:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:13:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:08,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:13:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:09,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:13:09,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448863762] [2021-05-06 00:13:09,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448863762] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:09,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205001165] [2021-05-06 00:13:09,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:09,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-06 00:13:09,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:13:09,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:09,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205001165] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:09,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:13:09,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 94 [2021-05-06 00:13:09,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993135191] [2021-05-06 00:13:09,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-06 00:13:09,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:13:09,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-06 00:13:09,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3928, Invalid=4814, Unknown=0, NotChecked=0, Total=8742 [2021-05-06 00:13:09,519 INFO L87 Difference]: Start difference. First operand 440 states and 525 transitions. Second operand has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 91 states have internal predecessors, (192), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:13:15,084 INFO L93 Difference]: Finished difference Result 458 states and 545 transitions. [2021-05-06 00:13:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-06 00:13:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 91 states have internal predecessors, (192), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187 [2021-05-06 00:13:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:13:15,085 INFO L225 Difference]: With dead ends: 458 [2021-05-06 00:13:15,085 INFO L226 Difference]: Without dead ends: 452 [2021-05-06 00:13:15,086 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4684 ImplicationChecksByTransitivity, 7392.3ms TimeCoverageRelationStatistics Valid=11596, Invalid=21346, Unknown=0, NotChecked=0, Total=32942 [2021-05-06 00:13:15,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-05-06 00:13:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 445. [2021-05-06 00:13:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 440 states have (on average 1.1977272727272728) internal successors, (527), 440 states have internal predecessors, (527), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 531 transitions. [2021-05-06 00:13:15,089 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 531 transitions. Word has length 187 [2021-05-06 00:13:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:13:15,089 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 531 transitions. [2021-05-06 00:13:15,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 91 states have internal predecessors, (192), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 531 transitions. [2021-05-06 00:13:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-06 00:13:15,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:13:15,090 INFO L523 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:13:15,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:15,291 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:13:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:13:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1127108427, now seen corresponding path program 86 times [2021-05-06 00:13:15,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:13:15,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407899328] [2021-05-06 00:13:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:13:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:13:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:18,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:13:18,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407899328] [2021-05-06 00:13:18,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407899328] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:18,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629205761] [2021-05-06 00:13:18,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:18,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:13:18,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:13:18,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-06 00:13:18,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:13:18,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:18,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629205761] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:18,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:13:18,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 95 [2021-05-06 00:13:18,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419691390] [2021-05-06 00:13:18,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-06 00:13:18,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:13:18,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-06 00:13:18,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4017, Invalid=4913, Unknown=0, NotChecked=0, Total=8930 [2021-05-06 00:13:18,735 INFO L87 Difference]: Start difference. First operand 445 states and 531 transitions. Second operand has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 92 states have internal predecessors, (194), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:13:24,391 INFO L93 Difference]: Finished difference Result 463 states and 551 transitions. [2021-05-06 00:13:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-06 00:13:24,392 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 92 states have internal predecessors, (194), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-06 00:13:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:13:24,393 INFO L225 Difference]: With dead ends: 463 [2021-05-06 00:13:24,393 INFO L226 Difference]: Without dead ends: 457 [2021-05-06 00:13:24,394 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4782 ImplicationChecksByTransitivity, 7516.5ms TimeCoverageRelationStatistics Valid=11861, Invalid=21811, Unknown=0, NotChecked=0, Total=33672 [2021-05-06 00:13:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-05-06 00:13:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 450. [2021-05-06 00:13:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 445 states have (on average 1.1977528089887641) internal successors, (533), 445 states have internal predecessors, (533), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 537 transitions. [2021-05-06 00:13:24,397 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 537 transitions. Word has length 189 [2021-05-06 00:13:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:13:24,397 INFO L480 AbstractCegarLoop]: Abstraction has 450 states and 537 transitions. [2021-05-06 00:13:24,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 92 states have internal predecessors, (194), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 537 transitions. [2021-05-06 00:13:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-06 00:13:24,398 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:13:24,398 INFO L523 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:13:24,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-06 00:13:24,601 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:13:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:13:24,601 INFO L82 PathProgramCache]: Analyzing trace with hash 460943942, now seen corresponding path program 87 times [2021-05-06 00:13:24,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:13:24,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328189620] [2021-05-06 00:13:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:13:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:27,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:13:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:27,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:13:27,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328189620] [2021-05-06 00:13:27,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328189620] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:27,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348023591] [2021-05-06 00:13:27,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:27,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2021-05-06 00:13:27,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:13:27,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-06 00:13:27,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:13:27,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:27,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:28,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348023591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:28,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:13:28,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 96 [2021-05-06 00:13:28,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137785233] [2021-05-06 00:13:28,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-06 00:13:28,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:13:28,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-06 00:13:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4107, Invalid=5013, Unknown=0, NotChecked=0, Total=9120 [2021-05-06 00:13:28,221 INFO L87 Difference]: Start difference. First operand 450 states and 537 transitions. Second operand has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 93 states have internal predecessors, (196), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:13:34,021 INFO L93 Difference]: Finished difference Result 468 states and 557 transitions. [2021-05-06 00:13:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-06 00:13:34,021 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 93 states have internal predecessors, (196), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-06 00:13:34,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:13:34,022 INFO L225 Difference]: With dead ends: 468 [2021-05-06 00:13:34,022 INFO L226 Difference]: Without dead ends: 462 [2021-05-06 00:13:34,023 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4881 ImplicationChecksByTransitivity, 7682.1ms TimeCoverageRelationStatistics Valid=12129, Invalid=22281, Unknown=0, NotChecked=0, Total=34410 [2021-05-06 00:13:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-05-06 00:13:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 455. [2021-05-06 00:13:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 450 states have (on average 1.1977777777777778) internal successors, (539), 450 states have internal predecessors, (539), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2021-05-06 00:13:34,027 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 191 [2021-05-06 00:13:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:13:34,027 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2021-05-06 00:13:34,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 93 states have internal predecessors, (196), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2021-05-06 00:13:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-06 00:13:34,028 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:13:34,028 INFO L523 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:13:34,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-06 00:13:34,228 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:13:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:13:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash 227000961, now seen corresponding path program 88 times [2021-05-06 00:13:34,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:13:34,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360150136] [2021-05-06 00:13:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:13:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:13:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:37,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:13:37,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360150136] [2021-05-06 00:13:37,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360150136] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:37,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552618870] [2021-05-06 00:13:37,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:37,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:13:37,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:13:37,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-06 00:13:37,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:13:37,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:37,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552618870] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:37,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:13:37,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 97 [2021-05-06 00:13:37,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778135957] [2021-05-06 00:13:37,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-06 00:13:37,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:13:37,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-06 00:13:37,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4198, Invalid=5114, Unknown=0, NotChecked=0, Total=9312 [2021-05-06 00:13:37,820 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 94 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:43,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:13:43,823 INFO L93 Difference]: Finished difference Result 473 states and 563 transitions. [2021-05-06 00:13:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-06 00:13:43,823 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 94 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-06 00:13:43,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:13:43,824 INFO L225 Difference]: With dead ends: 473 [2021-05-06 00:13:43,824 INFO L226 Difference]: Without dead ends: 467 [2021-05-06 00:13:43,825 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4981 ImplicationChecksByTransitivity, 7921.7ms TimeCoverageRelationStatistics Valid=12400, Invalid=22756, Unknown=0, NotChecked=0, Total=35156 [2021-05-06 00:13:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-05-06 00:13:43,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 460. [2021-05-06 00:13:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 455 states have (on average 1.1978021978021978) internal successors, (545), 455 states have internal predecessors, (545), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2021-05-06 00:13:43,828 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 193 [2021-05-06 00:13:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:13:43,829 INFO L480 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2021-05-06 00:13:43,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 94 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:43,829 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2021-05-06 00:13:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-06 00:13:43,829 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:13:43,829 INFO L523 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:13:44,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:44,030 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:13:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:13:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1253904388, now seen corresponding path program 89 times [2021-05-06 00:13:44,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:13:44,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72895348] [2021-05-06 00:13:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:13:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:13:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:47,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:13:47,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72895348] [2021-05-06 00:13:47,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72895348] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:47,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206033174] [2021-05-06 00:13:47,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:47,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-06 00:13:47,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:13:47,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-06 00:13:47,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:13:47,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:47,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206033174] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:47,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:13:47,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 98 [2021-05-06 00:13:47,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772636410] [2021-05-06 00:13:47,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-06 00:13:47,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:13:47,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-06 00:13:47,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=5216, Unknown=0, NotChecked=0, Total=9506 [2021-05-06 00:13:47,784 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 95 states have internal predecessors, (200), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:13:53,833 INFO L93 Difference]: Finished difference Result 478 states and 569 transitions. [2021-05-06 00:13:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-06 00:13:53,833 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 95 states have internal predecessors, (200), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2021-05-06 00:13:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:13:53,834 INFO L225 Difference]: With dead ends: 478 [2021-05-06 00:13:53,834 INFO L226 Difference]: Without dead ends: 472 [2021-05-06 00:13:53,835 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5082 ImplicationChecksByTransitivity, 8028.4ms TimeCoverageRelationStatistics Valid=12674, Invalid=23236, Unknown=0, NotChecked=0, Total=35910 [2021-05-06 00:13:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-05-06 00:13:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 465. [2021-05-06 00:13:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 460 states have (on average 1.1978260869565218) internal successors, (551), 460 states have internal predecessors, (551), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 555 transitions. [2021-05-06 00:13:53,839 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 555 transitions. Word has length 195 [2021-05-06 00:13:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:13:53,839 INFO L480 AbstractCegarLoop]: Abstraction has 465 states and 555 transitions. [2021-05-06 00:13:53,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 95 states have internal predecessors, (200), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:13:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 555 transitions. [2021-05-06 00:13:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-06 00:13:53,840 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:13:53,840 INFO L523 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:13:54,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:54,040 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:13:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:13:54,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1525197495, now seen corresponding path program 90 times [2021-05-06 00:13:54,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:13:54,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518518674] [2021-05-06 00:13:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:13:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:13:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:13:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:57,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:13:57,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518518674] [2021-05-06 00:13:57,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518518674] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:57,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441908214] [2021-05-06 00:13:57,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:13:57,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-05-06 00:13:57,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:13:57,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-06 00:13:57,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:13:57,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:13:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:13:57,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441908214] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:13:57,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:13:57,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 99 [2021-05-06 00:13:57,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204141460] [2021-05-06 00:13:57,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-06 00:13:57,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:13:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-06 00:13:57,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4383, Invalid=5319, Unknown=0, NotChecked=0, Total=9702 [2021-05-06 00:13:57,915 INFO L87 Difference]: Start difference. First operand 465 states and 555 transitions. Second operand has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 96 states have internal predecessors, (202), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:14:04,081 INFO L93 Difference]: Finished difference Result 483 states and 575 transitions. [2021-05-06 00:14:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-06 00:14:04,082 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 96 states have internal predecessors, (202), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-06 00:14:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:14:04,083 INFO L225 Difference]: With dead ends: 483 [2021-05-06 00:14:04,083 INFO L226 Difference]: Without dead ends: 477 [2021-05-06 00:14:04,084 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 8190.7ms TimeCoverageRelationStatistics Valid=12951, Invalid=23721, Unknown=0, NotChecked=0, Total=36672 [2021-05-06 00:14:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-05-06 00:14:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 470. [2021-05-06 00:14:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 465 states have (on average 1.1978494623655913) internal successors, (557), 465 states have internal predecessors, (557), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 561 transitions. [2021-05-06 00:14:04,087 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 561 transitions. Word has length 197 [2021-05-06 00:14:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:14:04,087 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 561 transitions. [2021-05-06 00:14:04,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 96 states have internal predecessors, (202), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 561 transitions. [2021-05-06 00:14:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-06 00:14:04,088 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:14:04,088 INFO L523 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:14:04,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:04,289 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:14:04,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:14:04,289 INFO L82 PathProgramCache]: Analyzing trace with hash 772448946, now seen corresponding path program 91 times [2021-05-06 00:14:04,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:14:04,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199002982] [2021-05-06 00:14:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:14:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:14:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:07,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:14:07,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199002982] [2021-05-06 00:14:07,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199002982] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:07,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858927677] [2021-05-06 00:14:07,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-06 00:14:07,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:14:07,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:07,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:08,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:08,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858927677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:08,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:14:08,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 100 [2021-05-06 00:14:08,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965556208] [2021-05-06 00:14:08,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-06 00:14:08,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:14:08,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-06 00:14:08,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4477, Invalid=5423, Unknown=0, NotChecked=0, Total=9900 [2021-05-06 00:14:08,054 INFO L87 Difference]: Start difference. First operand 470 states and 561 transitions. Second operand has 100 states, 100 states have (on average 2.04) internal successors, (204), 97 states have internal predecessors, (204), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:14:14,309 INFO L93 Difference]: Finished difference Result 488 states and 581 transitions. [2021-05-06 00:14:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-06 00:14:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.04) internal successors, (204), 97 states have internal predecessors, (204), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-06 00:14:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:14:14,310 INFO L225 Difference]: With dead ends: 488 [2021-05-06 00:14:14,310 INFO L226 Difference]: Without dead ends: 482 [2021-05-06 00:14:14,312 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5287 ImplicationChecksByTransitivity, 8283.2ms TimeCoverageRelationStatistics Valid=13231, Invalid=24211, Unknown=0, NotChecked=0, Total=37442 [2021-05-06 00:14:14,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-05-06 00:14:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 475. [2021-05-06 00:14:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 470 states have (on average 1.1978723404255318) internal successors, (563), 470 states have internal predecessors, (563), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 567 transitions. [2021-05-06 00:14:14,315 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 567 transitions. Word has length 199 [2021-05-06 00:14:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:14:14,315 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 567 transitions. [2021-05-06 00:14:14,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.04) internal successors, (204), 97 states have internal predecessors, (204), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 567 transitions. [2021-05-06 00:14:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-06 00:14:14,316 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:14:14,316 INFO L523 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:14:14,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-05-06 00:14:14,525 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:14:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:14:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1064400915, now seen corresponding path program 92 times [2021-05-06 00:14:14,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:14:14,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451291860] [2021-05-06 00:14:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:14:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:14:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:17,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:14:17,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451291860] [2021-05-06 00:14:17,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451291860] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:17,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207389597] [2021-05-06 00:14:17,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:17,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:14:17,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:14:17,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-06 00:14:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:14:17,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:17,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:18,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207389597] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:18,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:14:18,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 101 [2021-05-06 00:14:18,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560821005] [2021-05-06 00:14:18,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-06 00:14:18,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:14:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-06 00:14:18,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4572, Invalid=5528, Unknown=0, NotChecked=0, Total=10100 [2021-05-06 00:14:18,372 INFO L87 Difference]: Start difference. First operand 475 states and 567 transitions. Second operand has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 98 states have internal predecessors, (206), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:14:24,748 INFO L93 Difference]: Finished difference Result 493 states and 587 transitions. [2021-05-06 00:14:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-06 00:14:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 98 states have internal predecessors, (206), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-06 00:14:24,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:14:24,750 INFO L225 Difference]: With dead ends: 493 [2021-05-06 00:14:24,750 INFO L226 Difference]: Without dead ends: 487 [2021-05-06 00:14:24,751 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5391 ImplicationChecksByTransitivity, 8453.1ms TimeCoverageRelationStatistics Valid=13514, Invalid=24706, Unknown=0, NotChecked=0, Total=38220 [2021-05-06 00:14:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-05-06 00:14:24,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 480. [2021-05-06 00:14:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 475 states have (on average 1.1978947368421053) internal successors, (569), 475 states have internal predecessors, (569), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 573 transitions. [2021-05-06 00:14:24,755 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 573 transitions. Word has length 201 [2021-05-06 00:14:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:14:24,755 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 573 transitions. [2021-05-06 00:14:24,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 98 states have internal predecessors, (206), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 573 transitions. [2021-05-06 00:14:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-06 00:14:24,756 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:14:24,756 INFO L523 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:14:24,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:24,956 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:14:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:14:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1045558680, now seen corresponding path program 93 times [2021-05-06 00:14:24,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:14:24,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709299372] [2021-05-06 00:14:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:14:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:28,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:14:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:28,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:14:28,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709299372] [2021-05-06 00:14:28,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709299372] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:28,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911711042] [2021-05-06 00:14:28,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:28,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2021-05-06 00:14:28,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:14:28,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-06 00:14:28,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:14:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:28,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:29,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911711042] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:29,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:14:29,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 102 [2021-05-06 00:14:29,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717443817] [2021-05-06 00:14:29,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-06 00:14:29,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:14:29,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-06 00:14:29,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4668, Invalid=5634, Unknown=0, NotChecked=0, Total=10302 [2021-05-06 00:14:29,038 INFO L87 Difference]: Start difference. First operand 480 states and 573 transitions. Second operand has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 99 states have internal predecessors, (208), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:14:35,526 INFO L93 Difference]: Finished difference Result 498 states and 593 transitions. [2021-05-06 00:14:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-06 00:14:35,527 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 99 states have internal predecessors, (208), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2021-05-06 00:14:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:14:35,528 INFO L225 Difference]: With dead ends: 498 [2021-05-06 00:14:35,528 INFO L226 Difference]: Without dead ends: 492 [2021-05-06 00:14:35,529 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5496 ImplicationChecksByTransitivity, 8617.4ms TimeCoverageRelationStatistics Valid=13800, Invalid=25206, Unknown=0, NotChecked=0, Total=39006 [2021-05-06 00:14:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-05-06 00:14:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 485. [2021-05-06 00:14:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 480 states have (on average 1.1979166666666667) internal successors, (575), 480 states have internal predecessors, (575), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 579 transitions. [2021-05-06 00:14:35,533 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 579 transitions. Word has length 203 [2021-05-06 00:14:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:14:35,533 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 579 transitions. [2021-05-06 00:14:35,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 99 states have internal predecessors, (208), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 579 transitions. [2021-05-06 00:14:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-06 00:14:35,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:14:35,534 INFO L523 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:14:35,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-06 00:14:35,735 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:14:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:14:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash -118040029, now seen corresponding path program 94 times [2021-05-06 00:14:35,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:14:35,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431539740] [2021-05-06 00:14:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:14:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:14:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:39,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:14:39,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431539740] [2021-05-06 00:14:39,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431539740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:39,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102769250] [2021-05-06 00:14:39,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:39,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:14:39,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:14:39,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-06 00:14:39,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:14:39,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:39,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102769250] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:39,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:14:39,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 103 [2021-05-06 00:14:39,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132553779] [2021-05-06 00:14:39,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 00:14:39,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:14:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 00:14:39,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4765, Invalid=5741, Unknown=0, NotChecked=0, Total=10506 [2021-05-06 00:14:39,761 INFO L87 Difference]: Start difference. First operand 485 states and 579 transitions. Second operand has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 100 states have internal predecessors, (210), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:14:46,417 INFO L93 Difference]: Finished difference Result 503 states and 599 transitions. [2021-05-06 00:14:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-06 00:14:46,418 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 100 states have internal predecessors, (210), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-06 00:14:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:14:46,419 INFO L225 Difference]: With dead ends: 503 [2021-05-06 00:14:46,419 INFO L226 Difference]: Without dead ends: 497 [2021-05-06 00:14:46,420 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5602 ImplicationChecksByTransitivity, 8818.2ms TimeCoverageRelationStatistics Valid=14089, Invalid=25711, Unknown=0, NotChecked=0, Total=39800 [2021-05-06 00:14:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-05-06 00:14:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 490. [2021-05-06 00:14:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 485 states have (on average 1.1979381443298969) internal successors, (581), 485 states have internal predecessors, (581), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 585 transitions. [2021-05-06 00:14:46,424 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 585 transitions. Word has length 205 [2021-05-06 00:14:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:14:46,424 INFO L480 AbstractCegarLoop]: Abstraction has 490 states and 585 transitions. [2021-05-06 00:14:46,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 100 states have internal predecessors, (210), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 585 transitions. [2021-05-06 00:14:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-06 00:14:46,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:14:46,425 INFO L523 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:14:46,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:46,626 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:14:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:14:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2125813986, now seen corresponding path program 95 times [2021-05-06 00:14:46,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:14:46,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478463438] [2021-05-06 00:14:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:14:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:50,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:14:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:14:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:50,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:14:50,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478463438] [2021-05-06 00:14:50,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478463438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:50,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675954687] [2021-05-06 00:14:50,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:50,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2021-05-06 00:14:50,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:14:50,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-06 00:14:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:14:50,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:14:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:14:50,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675954687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:14:50,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:14:50,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 104 [2021-05-06 00:14:50,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129757134] [2021-05-06 00:14:50,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-06 00:14:50,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:14:50,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-06 00:14:50,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4863, Invalid=5849, Unknown=0, NotChecked=0, Total=10712 [2021-05-06 00:14:50,777 INFO L87 Difference]: Start difference. First operand 490 states and 585 transitions. Second operand has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 101 states have internal predecessors, (212), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:14:57,518 INFO L93 Difference]: Finished difference Result 508 states and 605 transitions. [2021-05-06 00:14:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-06 00:14:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 101 states have internal predecessors, (212), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-06 00:14:57,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:14:57,520 INFO L225 Difference]: With dead ends: 508 [2021-05-06 00:14:57,520 INFO L226 Difference]: Without dead ends: 502 [2021-05-06 00:14:57,521 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5709 ImplicationChecksByTransitivity, 8949.5ms TimeCoverageRelationStatistics Valid=14381, Invalid=26221, Unknown=0, NotChecked=0, Total=40602 [2021-05-06 00:14:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-05-06 00:14:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 495. [2021-05-06 00:14:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 490 states have (on average 1.1979591836734693) internal successors, (587), 490 states have internal predecessors, (587), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 591 transitions. [2021-05-06 00:14:57,525 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 591 transitions. Word has length 207 [2021-05-06 00:14:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:14:57,525 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 591 transitions. [2021-05-06 00:14:57,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 101 states have internal predecessors, (212), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:14:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 591 transitions. [2021-05-06 00:14:57,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-06 00:14:57,526 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:14:57,526 INFO L523 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:14:57,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:14:57,726 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:14:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:14:57,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1138696537, now seen corresponding path program 96 times [2021-05-06 00:14:57,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:14:57,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163804853] [2021-05-06 00:14:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:14:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:15:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:01,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:15:01,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163804853] [2021-05-06 00:15:01,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163804853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:01,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481494129] [2021-05-06 00:15:01,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:15:01,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2021-05-06 00:15:01,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:15:01,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-06 00:15:01,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:15:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:01,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:02,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:02,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481494129] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:02,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:15:02,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 105 [2021-05-06 00:15:02,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762451529] [2021-05-06 00:15:02,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-06 00:15:02,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:15:02,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-06 00:15:02,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4962, Invalid=5958, Unknown=0, NotChecked=0, Total=10920 [2021-05-06 00:15:02,057 INFO L87 Difference]: Start difference. First operand 495 states and 591 transitions. Second operand has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 102 states have internal predecessors, (214), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:15:09,156 INFO L93 Difference]: Finished difference Result 513 states and 611 transitions. [2021-05-06 00:15:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-06 00:15:09,156 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 102 states have internal predecessors, (214), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2021-05-06 00:15:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:15:09,157 INFO L225 Difference]: With dead ends: 513 [2021-05-06 00:15:09,157 INFO L226 Difference]: Without dead ends: 507 [2021-05-06 00:15:09,159 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5817 ImplicationChecksByTransitivity, 9311.9ms TimeCoverageRelationStatistics Valid=14676, Invalid=26736, Unknown=0, NotChecked=0, Total=41412 [2021-05-06 00:15:09,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-05-06 00:15:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 500. [2021-05-06 00:15:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 495 states have (on average 1.197979797979798) internal successors, (593), 495 states have internal predecessors, (593), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 597 transitions. [2021-05-06 00:15:09,162 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 597 transitions. Word has length 209 [2021-05-06 00:15:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:15:09,162 INFO L480 AbstractCegarLoop]: Abstraction has 500 states and 597 transitions. [2021-05-06 00:15:09,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 102 states have internal predecessors, (214), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 597 transitions. [2021-05-06 00:15:09,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-06 00:15:09,173 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:15:09,173 INFO L523 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:15:09,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-05-06 00:15:09,374 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:15:09,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:15:09,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1287784236, now seen corresponding path program 97 times [2021-05-06 00:15:09,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:15:09,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037794264] [2021-05-06 00:15:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:15:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:15:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:13,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:15:13,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037794264] [2021-05-06 00:15:13,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037794264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:13,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834583506] [2021-05-06 00:15:13,052 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:15:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:13,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-06 00:15:13,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:15:13,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:13,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834583506] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:13,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:15:13,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 106 [2021-05-06 00:15:13,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400542063] [2021-05-06 00:15:13,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-06 00:15:13,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:15:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-06 00:15:13,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2021-05-06 00:15:13,646 INFO L87 Difference]: Start difference. First operand 500 states and 597 transitions. Second operand has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 103 states have internal predecessors, (216), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:15:20,915 INFO L93 Difference]: Finished difference Result 518 states and 617 transitions. [2021-05-06 00:15:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-06 00:15:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 103 states have internal predecessors, (216), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-06 00:15:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:15:20,917 INFO L225 Difference]: With dead ends: 518 [2021-05-06 00:15:20,917 INFO L226 Difference]: Without dead ends: 512 [2021-05-06 00:15:20,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5926 ImplicationChecksByTransitivity, 9477.1ms TimeCoverageRelationStatistics Valid=14974, Invalid=27256, Unknown=0, NotChecked=0, Total=42230 [2021-05-06 00:15:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-05-06 00:15:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 505. [2021-05-06 00:15:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 500 states have (on average 1.198) internal successors, (599), 500 states have internal predecessors, (599), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 603 transitions. [2021-05-06 00:15:20,922 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 603 transitions. Word has length 211 [2021-05-06 00:15:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:15:20,922 INFO L480 AbstractCegarLoop]: Abstraction has 505 states and 603 transitions. [2021-05-06 00:15:20,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 103 states have internal predecessors, (216), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 603 transitions. [2021-05-06 00:15:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-06 00:15:20,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:15:20,923 INFO L523 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:15:21,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:15:21,126 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:15:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:15:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash -968565361, now seen corresponding path program 98 times [2021-05-06 00:15:21,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:15:21,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093076991] [2021-05-06 00:15:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:15:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:15:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:24,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:15:24,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093076991] [2021-05-06 00:15:24,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093076991] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:24,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100552151] [2021-05-06 00:15:24,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:15:25,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:15:25,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:15:25,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-06 00:15:25,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:15:25,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:25,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100552151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:25,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:15:25,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 107 [2021-05-06 00:15:25,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594783375] [2021-05-06 00:15:25,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-06 00:15:25,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:15:25,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-06 00:15:25,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5163, Invalid=6179, Unknown=0, NotChecked=0, Total=11342 [2021-05-06 00:15:25,491 INFO L87 Difference]: Start difference. First operand 505 states and 603 transitions. Second operand has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 104 states have internal predecessors, (218), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:15:32,746 INFO L93 Difference]: Finished difference Result 523 states and 623 transitions. [2021-05-06 00:15:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-06 00:15:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 104 states have internal predecessors, (218), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-06 00:15:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:15:32,748 INFO L225 Difference]: With dead ends: 523 [2021-05-06 00:15:32,748 INFO L226 Difference]: Without dead ends: 517 [2021-05-06 00:15:32,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6036 ImplicationChecksByTransitivity, 9585.8ms TimeCoverageRelationStatistics Valid=15275, Invalid=27781, Unknown=0, NotChecked=0, Total=43056 [2021-05-06 00:15:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-05-06 00:15:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 510. [2021-05-06 00:15:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 505 states have (on average 1.198019801980198) internal successors, (605), 505 states have internal predecessors, (605), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 609 transitions. [2021-05-06 00:15:32,758 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 609 transitions. Word has length 213 [2021-05-06 00:15:32,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:15:32,758 INFO L480 AbstractCegarLoop]: Abstraction has 510 states and 609 transitions. [2021-05-06 00:15:32,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 104 states have internal predecessors, (218), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 609 transitions. [2021-05-06 00:15:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-06 00:15:32,759 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:15:32,759 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:15:32,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:15:32,960 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:15:32,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:15:32,960 INFO L82 PathProgramCache]: Analyzing trace with hash 858095498, now seen corresponding path program 99 times [2021-05-06 00:15:32,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:15:32,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920292636] [2021-05-06 00:15:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:15:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:15:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:36,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:15:36,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920292636] [2021-05-06 00:15:36,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920292636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:36,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236403738] [2021-05-06 00:15:36,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:15:37,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-06 00:15:37,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:15:37,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-06 00:15:37,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:15:37,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:37,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236403738] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:37,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:15:37,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 108 [2021-05-06 00:15:37,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238471903] [2021-05-06 00:15:37,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-06 00:15:37,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:15:37,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-06 00:15:37,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5265, Invalid=6291, Unknown=0, NotChecked=0, Total=11556 [2021-05-06 00:15:37,516 INFO L87 Difference]: Start difference. First operand 510 states and 609 transitions. Second operand has 108 states, 108 states have (on average 2.037037037037037) internal successors, (220), 105 states have internal predecessors, (220), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:15:44,829 INFO L93 Difference]: Finished difference Result 526 states and 627 transitions. [2021-05-06 00:15:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-06 00:15:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.037037037037037) internal successors, (220), 105 states have internal predecessors, (220), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-06 00:15:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:15:44,831 INFO L225 Difference]: With dead ends: 526 [2021-05-06 00:15:44,831 INFO L226 Difference]: Without dead ends: 520 [2021-05-06 00:15:44,833 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6147 ImplicationChecksByTransitivity, 9757.9ms TimeCoverageRelationStatistics Valid=15579, Invalid=28311, Unknown=0, NotChecked=0, Total=43890 [2021-05-06 00:15:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-05-06 00:15:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 515. [2021-05-06 00:15:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 510 states have (on average 1.1980392156862745) internal successors, (611), 510 states have internal predecessors, (611), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 615 transitions. [2021-05-06 00:15:44,838 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 615 transitions. Word has length 215 [2021-05-06 00:15:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:15:44,838 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 615 transitions. [2021-05-06 00:15:44,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.037037037037037) internal successors, (220), 105 states have internal predecessors, (220), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 615 transitions. [2021-05-06 00:15:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-06 00:15:44,839 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:15:44,839 INFO L523 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:15:45,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-06 00:15:45,061 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:15:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:15:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash -362443067, now seen corresponding path program 100 times [2021-05-06 00:15:45,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:15:45,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327049498] [2021-05-06 00:15:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:15:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:15:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:15:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:48,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:15:48,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327049498] [2021-05-06 00:15:48,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327049498] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:15:48,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936920834] [2021-05-06 00:15:48,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:15:49,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:15:49,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:15:49,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-06 00:15:49,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:15:49,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:49,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:50,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:51,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:52,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:53,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:54,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:55,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:56,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:57,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:57,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:15:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 10100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:15:57,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936920834] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 00:15:57,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-06 00:15:57,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [106] total 207 [2021-05-06 00:15:57,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371647577] [2021-05-06 00:15:57,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-06 00:15:57,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:15:57,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-06 00:15:57,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10511, Invalid=32131, Unknown=0, NotChecked=0, Total=42642 [2021-05-06 00:15:57,235 INFO L87 Difference]: Start difference. First operand 515 states and 615 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:15:57,945 INFO L93 Difference]: Finished difference Result 10815 states and 11013 transitions. [2021-05-06 00:15:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-06 00:15:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-06 00:15:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:15:57,969 INFO L225 Difference]: With dead ends: 10815 [2021-05-06 00:15:57,969 INFO L226 Difference]: Without dead ends: 10606 [2021-05-06 00:15:57,975 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10400 ImplicationChecksByTransitivity, 11545.2ms TimeCoverageRelationStatistics Valid=10511, Invalid=32131, Unknown=0, NotChecked=0, Total=42642 [2021-05-06 00:15:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10606 states. [2021-05-06 00:15:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10606 to 10410. [2021-05-06 00:15:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10410 states, 10405 states have (on average 1.0189332051898126) internal successors, (10602), 10405 states have internal predecessors, (10602), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10410 states to 10410 states and 10606 transitions. [2021-05-06 00:15:58,090 INFO L78 Accepts]: Start accepts. Automaton has 10410 states and 10606 transitions. Word has length 217 [2021-05-06 00:15:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:15:58,090 INFO L480 AbstractCegarLoop]: Abstraction has 10410 states and 10606 transitions. [2021-05-06 00:15:58,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:15:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states and 10606 transitions. [2021-05-06 00:15:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-06 00:15:58,100 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:15:58,100 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:15:58,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-06 00:15:58,316 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:15:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:15:58,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1594537039, now seen corresponding path program 1 times [2021-05-06 00:15:58,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:15:58,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772929894] [2021-05-06 00:15:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:15:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:16:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9902 backedges. 0 proven. 9902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:02,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:16:02,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772929894] [2021-05-06 00:16:02,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772929894] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:02,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375274319] [2021-05-06 00:16:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:16:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:02,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-06 00:16:02,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:16:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9902 backedges. 0 proven. 9902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:02,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375274319] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:02,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:16:02,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 109 [2021-05-06 00:16:02,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185872367] [2021-05-06 00:16:02,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-06 00:16:03,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:16:03,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-06 00:16:03,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5368, Invalid=6404, Unknown=0, NotChecked=0, Total=11772 [2021-05-06 00:16:03,001 INFO L87 Difference]: Start difference. First operand 10410 states and 10606 transitions. Second operand has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:16:10,811 INFO L93 Difference]: Finished difference Result 10618 states and 10912 transitions. [2021-05-06 00:16:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-06 00:16:10,811 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-06 00:16:10,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:16:10,824 INFO L225 Difference]: With dead ends: 10618 [2021-05-06 00:16:10,824 INFO L226 Difference]: Without dead ends: 10411 [2021-05-06 00:16:10,829 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6259 ImplicationChecksByTransitivity, 10127.1ms TimeCoverageRelationStatistics Valid=15886, Invalid=28846, Unknown=0, NotChecked=0, Total=44732 [2021-05-06 00:16:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2021-05-06 00:16:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 10405. [2021-05-06 00:16:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10405 states, 10400 states have (on average 1.01875) internal successors, (10595), 10400 states have internal predecessors, (10595), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10405 states to 10405 states and 10599 transitions. [2021-05-06 00:16:10,929 INFO L78 Accepts]: Start accepts. Automaton has 10405 states and 10599 transitions. Word has length 217 [2021-05-06 00:16:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:16:10,929 INFO L480 AbstractCegarLoop]: Abstraction has 10405 states and 10599 transitions. [2021-05-06 00:16:10,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10405 states and 10599 transitions. [2021-05-06 00:16:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-06 00:16:10,939 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:16:10,939 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:16:11,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-06 00:16:11,161 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:16:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:16:11,161 INFO L82 PathProgramCache]: Analyzing trace with hash 645254100, now seen corresponding path program 2 times [2021-05-06 00:16:11,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:16:11,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128883031] [2021-05-06 00:16:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:16:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:16:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9906 backedges. 0 proven. 9906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:15,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:16:15,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128883031] [2021-05-06 00:16:15,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128883031] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:15,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294866726] [2021-05-06 00:16:15,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:16:15,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:16:15,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:16:15,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-06 00:16:15,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:16:15,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9906 backedges. 0 proven. 9906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:15,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294866726] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:15,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:16:15,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 110 [2021-05-06 00:16:15,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378588338] [2021-05-06 00:16:15,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states [2021-05-06 00:16:15,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:16:15,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-05-06 00:16:15,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5472, Invalid=6518, Unknown=0, NotChecked=0, Total=11990 [2021-05-06 00:16:15,787 INFO L87 Difference]: Start difference. First operand 10405 states and 10599 transitions. Second operand has 110 states, 110 states have (on average 2.0090909090909093) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:16:23,711 INFO L93 Difference]: Finished difference Result 10614 states and 10906 transitions. [2021-05-06 00:16:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-06 00:16:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.0090909090909093) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2021-05-06 00:16:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:16:23,723 INFO L225 Difference]: With dead ends: 10614 [2021-05-06 00:16:23,724 INFO L226 Difference]: Without dead ends: 10407 [2021-05-06 00:16:23,727 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6372 ImplicationChecksByTransitivity, 10175.9ms TimeCoverageRelationStatistics Valid=16196, Invalid=29386, Unknown=0, NotChecked=0, Total=45582 [2021-05-06 00:16:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2021-05-06 00:16:23,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 10398. [2021-05-06 00:16:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10398 states, 10393 states have (on average 1.0185701914750314) internal successors, (10586), 10393 states have internal predecessors, (10586), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10398 states to 10398 states and 10590 transitions. [2021-05-06 00:16:23,805 INFO L78 Accepts]: Start accepts. Automaton has 10398 states and 10590 transitions. Word has length 219 [2021-05-06 00:16:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:16:23,805 INFO L480 AbstractCegarLoop]: Abstraction has 10398 states and 10590 transitions. [2021-05-06 00:16:23,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 110 states, 110 states have (on average 2.0090909090909093) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10398 states and 10590 transitions. [2021-05-06 00:16:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-06 00:16:23,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:16:23,817 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:16:24,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-06 00:16:24,033 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:16:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:16:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1082583527, now seen corresponding path program 3 times [2021-05-06 00:16:24,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:16:24,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851167325] [2021-05-06 00:16:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:16:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:28,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:16:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9912 backedges. 0 proven. 9912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:28,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:16:28,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851167325] [2021-05-06 00:16:28,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851167325] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:28,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455605311] [2021-05-06 00:16:28,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:16:28,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-06 00:16:28,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:16:28,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-06 00:16:28,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:16:28,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9912 backedges. 0 proven. 9912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:28,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455605311] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:28,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:16:28,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 111 [2021-05-06 00:16:28,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320787186] [2021-05-06 00:16:28,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-06 00:16:28,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:16:28,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-06 00:16:28,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5577, Invalid=6633, Unknown=0, NotChecked=0, Total=12210 [2021-05-06 00:16:28,921 INFO L87 Difference]: Start difference. First operand 10398 states and 10590 transitions. Second operand has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:16:36,783 INFO L93 Difference]: Finished difference Result 10608 states and 10898 transitions. [2021-05-06 00:16:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-06 00:16:36,783 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-06 00:16:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:16:36,797 INFO L225 Difference]: With dead ends: 10608 [2021-05-06 00:16:36,798 INFO L226 Difference]: Without dead ends: 10401 [2021-05-06 00:16:36,801 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6486 ImplicationChecksByTransitivity, 10302.2ms TimeCoverageRelationStatistics Valid=16509, Invalid=29931, Unknown=0, NotChecked=0, Total=46440 [2021-05-06 00:16:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2021-05-06 00:16:36,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 10389. [2021-05-06 00:16:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10389 states, 10384 states have (on average 1.0183936825885977) internal successors, (10575), 10384 states have internal predecessors, (10575), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10389 states to 10389 states and 10579 transitions. [2021-05-06 00:16:36,880 INFO L78 Accepts]: Start accepts. Automaton has 10389 states and 10579 transitions. Word has length 221 [2021-05-06 00:16:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:16:36,880 INFO L480 AbstractCegarLoop]: Abstraction has 10389 states and 10579 transitions. [2021-05-06 00:16:36,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 10389 states and 10579 transitions. [2021-05-06 00:16:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-06 00:16:36,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:16:36,891 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:16:37,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-06 00:16:37,113 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:16:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:16:37,113 INFO L82 PathProgramCache]: Analyzing trace with hash 617800478, now seen corresponding path program 4 times [2021-05-06 00:16:37,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:16:37,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33084922] [2021-05-06 00:16:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:16:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:16:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 0 proven. 9920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:41,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:16:41,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33084922] [2021-05-06 00:16:41,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33084922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:41,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777472907] [2021-05-06 00:16:41,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:16:41,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:16:41,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:16:41,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 107 conjunts are in the unsatisfiable core [2021-05-06 00:16:41,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:16:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:41,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 0 proven. 9920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:42,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777472907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:42,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:16:42,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 108] total 112 [2021-05-06 00:16:42,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014252222] [2021-05-06 00:16:42,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-06 00:16:42,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:16:42,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-06 00:16:42,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5683, Invalid=6749, Unknown=0, NotChecked=0, Total=12432 [2021-05-06 00:16:42,021 INFO L87 Difference]: Start difference. First operand 10389 states and 10579 transitions. Second operand has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 109 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:16:49,968 INFO L93 Difference]: Finished difference Result 10600 states and 10888 transitions. [2021-05-06 00:16:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-05-06 00:16:49,969 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 109 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-06 00:16:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:16:49,977 INFO L225 Difference]: With dead ends: 10600 [2021-05-06 00:16:49,977 INFO L226 Difference]: Without dead ends: 10393 [2021-05-06 00:16:49,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6601 ImplicationChecksByTransitivity, 10620.6ms TimeCoverageRelationStatistics Valid=16825, Invalid=30481, Unknown=0, NotChecked=0, Total=47306 [2021-05-06 00:16:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10393 states. [2021-05-06 00:16:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10393 to 10378. [2021-05-06 00:16:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10378 states, 10373 states have (on average 1.0182203798322569) internal successors, (10562), 10373 states have internal predecessors, (10562), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 10566 transitions. [2021-05-06 00:16:50,062 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 10566 transitions. Word has length 223 [2021-05-06 00:16:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:16:50,063 INFO L480 AbstractCegarLoop]: Abstraction has 10378 states and 10566 transitions. [2021-05-06 00:16:50,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 109 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:16:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 10566 transitions. [2021-05-06 00:16:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-06 00:16:50,072 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:16:50,073 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:16:50,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-05-06 00:16:50,296 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:16:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:16:50,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1695710493, now seen corresponding path program 5 times [2021-05-06 00:16:50,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:16:50,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533455789] [2021-05-06 00:16:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:16:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:16:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:16:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9930 backedges. 0 proven. 9930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:54,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:16:54,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533455789] [2021-05-06 00:16:54,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533455789] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:54,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843900788] [2021-05-06 00:16:54,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:16:54,764 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2021-05-06 00:16:54,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:16:54,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-06 00:16:54,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:16:54,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:54,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:16:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9930 backedges. 0 proven. 9930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:16:55,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843900788] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:16:55,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:16:55,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 113 [2021-05-06 00:16:55,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021759466] [2021-05-06 00:16:55,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2021-05-06 00:16:55,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:16:55,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-05-06 00:16:55,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5790, Invalid=6866, Unknown=0, NotChecked=0, Total=12656 [2021-05-06 00:16:55,224 INFO L87 Difference]: Start difference. First operand 10378 states and 10566 transitions. Second operand has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:17:03,216 INFO L93 Difference]: Finished difference Result 10590 states and 10876 transitions. [2021-05-06 00:17:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-06 00:17:03,216 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-06 00:17:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:17:03,225 INFO L225 Difference]: With dead ends: 10590 [2021-05-06 00:17:03,226 INFO L226 Difference]: Without dead ends: 10383 [2021-05-06 00:17:03,229 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6717 ImplicationChecksByTransitivity, 10682.9ms TimeCoverageRelationStatistics Valid=17144, Invalid=31036, Unknown=0, NotChecked=0, Total=48180 [2021-05-06 00:17:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2021-05-06 00:17:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 10365. [2021-05-06 00:17:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10365 states, 10360 states have (on average 1.018050193050193) internal successors, (10547), 10360 states have internal predecessors, (10547), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 10551 transitions. [2021-05-06 00:17:03,306 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 10551 transitions. Word has length 225 [2021-05-06 00:17:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:17:03,306 INFO L480 AbstractCegarLoop]: Abstraction has 10365 states and 10551 transitions. [2021-05-06 00:17:03,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 10551 transitions. [2021-05-06 00:17:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-06 00:17:03,317 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:17:03,317 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:17:03,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-06 00:17:03,533 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:17:03,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:17:03,533 INFO L82 PathProgramCache]: Analyzing trace with hash -186694296, now seen corresponding path program 6 times [2021-05-06 00:17:03,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:17:03,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163951328] [2021-05-06 00:17:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:17:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:07,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:17:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9942 backedges. 0 proven. 9942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:07,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:17:07,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163951328] [2021-05-06 00:17:07,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163951328] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:07,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150004694] [2021-05-06 00:17:07,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:08,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2021-05-06 00:17:08,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:17:08,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-06 00:17:08,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:17:08,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9942 backedges. 0 proven. 9942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:08,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150004694] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:08,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:17:08,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 114 [2021-05-06 00:17:08,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364454043] [2021-05-06 00:17:08,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-06 00:17:08,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:17:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-06 00:17:08,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5898, Invalid=6984, Unknown=0, NotChecked=0, Total=12882 [2021-05-06 00:17:08,602 INFO L87 Difference]: Start difference. First operand 10365 states and 10551 transitions. Second operand has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:17:16,870 INFO L93 Difference]: Finished difference Result 10578 states and 10862 transitions. [2021-05-06 00:17:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-06 00:17:16,870 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-05-06 00:17:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:17:16,875 INFO L225 Difference]: With dead ends: 10578 [2021-05-06 00:17:16,875 INFO L226 Difference]: Without dead ends: 10371 [2021-05-06 00:17:16,878 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6834 ImplicationChecksByTransitivity, 10907.6ms TimeCoverageRelationStatistics Valid=17466, Invalid=31596, Unknown=0, NotChecked=0, Total=49062 [2021-05-06 00:17:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10371 states. [2021-05-06 00:17:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 10350. [2021-05-06 00:17:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10350 states, 10345 states have (on average 1.0178830352827453) internal successors, (10530), 10345 states have internal predecessors, (10530), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10350 states to 10350 states and 10534 transitions. [2021-05-06 00:17:17,002 INFO L78 Accepts]: Start accepts. Automaton has 10350 states and 10534 transitions. Word has length 227 [2021-05-06 00:17:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:17:17,002 INFO L480 AbstractCegarLoop]: Abstraction has 10350 states and 10534 transitions. [2021-05-06 00:17:17,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10350 states and 10534 transitions. [2021-05-06 00:17:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-06 00:17:17,013 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:17:17,013 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:17:17,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:17,233 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:17:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:17:17,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1721075027, now seen corresponding path program 7 times [2021-05-06 00:17:17,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:17:17,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906109738] [2021-05-06 00:17:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:17:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:17:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9956 backedges. 0 proven. 9956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:21,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:17:21,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906109738] [2021-05-06 00:17:21,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906109738] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:21,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141211118] [2021-05-06 00:17:21,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:21,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 110 conjunts are in the unsatisfiable core [2021-05-06 00:17:21,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:17:21,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9956 backedges. 0 proven. 9956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:22,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141211118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:22,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:17:22,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111] total 115 [2021-05-06 00:17:22,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331333273] [2021-05-06 00:17:22,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-06 00:17:22,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:17:22,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-06 00:17:22,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6007, Invalid=7103, Unknown=0, NotChecked=0, Total=13110 [2021-05-06 00:17:22,232 INFO L87 Difference]: Start difference. First operand 10350 states and 10534 transitions. Second operand has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 112 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:17:30,493 INFO L93 Difference]: Finished difference Result 10564 states and 10846 transitions. [2021-05-06 00:17:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-05-06 00:17:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 112 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-06 00:17:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:17:30,498 INFO L225 Difference]: With dead ends: 10564 [2021-05-06 00:17:30,498 INFO L226 Difference]: Without dead ends: 10357 [2021-05-06 00:17:30,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 10971.1ms TimeCoverageRelationStatistics Valid=17791, Invalid=32161, Unknown=0, NotChecked=0, Total=49952 [2021-05-06 00:17:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10357 states. [2021-05-06 00:17:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10357 to 10333. [2021-05-06 00:17:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10333 states, 10328 states have (on average 1.0177188226181255) internal successors, (10511), 10328 states have internal predecessors, (10511), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10333 states to 10333 states and 10515 transitions. [2021-05-06 00:17:30,565 INFO L78 Accepts]: Start accepts. Automaton has 10333 states and 10515 transitions. Word has length 229 [2021-05-06 00:17:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:17:30,565 INFO L480 AbstractCegarLoop]: Abstraction has 10333 states and 10515 transitions. [2021-05-06 00:17:30,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 112 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10333 states and 10515 transitions. [2021-05-06 00:17:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-06 00:17:30,573 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:17:30,573 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:17:30,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:30,774 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:17:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:17:30,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1207792306, now seen corresponding path program 8 times [2021-05-06 00:17:30,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:17:30,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901436657] [2021-05-06 00:17:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:17:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:17:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9972 backedges. 0 proven. 9972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:35,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:17:35,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901436657] [2021-05-06 00:17:35,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901436657] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:35,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622451368] [2021-05-06 00:17:35,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:35,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:17:35,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:17:35,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-06 00:17:35,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:17:35,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9972 backedges. 0 proven. 9972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:35,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622451368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:35,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:17:35,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 116 [2021-05-06 00:17:35,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121242891] [2021-05-06 00:17:35,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-06 00:17:35,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:17:35,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-06 00:17:35,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6117, Invalid=7223, Unknown=0, NotChecked=0, Total=13340 [2021-05-06 00:17:35,859 INFO L87 Difference]: Start difference. First operand 10333 states and 10515 transitions. Second operand has 116 states, 116 states have (on average 2.0086206896551726) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:44,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:17:44,280 INFO L93 Difference]: Finished difference Result 10548 states and 10828 transitions. [2021-05-06 00:17:44,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-06 00:17:44,281 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0086206896551726) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-06 00:17:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:17:44,286 INFO L225 Difference]: With dead ends: 10548 [2021-05-06 00:17:44,286 INFO L226 Difference]: Without dead ends: 10341 [2021-05-06 00:17:44,288 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7071 ImplicationChecksByTransitivity, 11147.3ms TimeCoverageRelationStatistics Valid=18119, Invalid=32731, Unknown=0, NotChecked=0, Total=50850 [2021-05-06 00:17:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10341 states. [2021-05-06 00:17:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10341 to 10314. [2021-05-06 00:17:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10314 states, 10309 states have (on average 1.0175574740517994) internal successors, (10490), 10309 states have internal predecessors, (10490), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10314 states to 10314 states and 10494 transitions. [2021-05-06 00:17:44,336 INFO L78 Accepts]: Start accepts. Automaton has 10314 states and 10494 transitions. Word has length 231 [2021-05-06 00:17:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:17:44,336 INFO L480 AbstractCegarLoop]: Abstraction has 10314 states and 10494 transitions. [2021-05-06 00:17:44,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 2.0086206896551726) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 10314 states and 10494 transitions. [2021-05-06 00:17:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-06 00:17:44,344 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:17:44,344 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:17:44,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:44,545 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:17:44,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:17:44,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1649246857, now seen corresponding path program 9 times [2021-05-06 00:17:44,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:17:44,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628978432] [2021-05-06 00:17:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:17:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:49,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:17:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:17:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9990 backedges. 0 proven. 9990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:49,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:17:49,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628978432] [2021-05-06 00:17:49,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628978432] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:49,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072066415] [2021-05-06 00:17:49,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:49,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-06 00:17:49,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:17:49,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-06 00:17:49,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:17:49,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:17:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9990 backedges. 0 proven. 9990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:17:49,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072066415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:17:49,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:17:49,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 117 [2021-05-06 00:17:49,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631483825] [2021-05-06 00:17:49,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-06 00:17:49,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:17:49,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-06 00:17:49,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6228, Invalid=7344, Unknown=0, NotChecked=0, Total=13572 [2021-05-06 00:17:49,869 INFO L87 Difference]: Start difference. First operand 10314 states and 10494 transitions. Second operand has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 114 states have internal predecessors, (235), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:17:58,410 INFO L93 Difference]: Finished difference Result 10530 states and 10808 transitions. [2021-05-06 00:17:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-06 00:17:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 114 states have internal predecessors, (235), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2021-05-06 00:17:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:17:58,418 INFO L225 Difference]: With dead ends: 10530 [2021-05-06 00:17:58,419 INFO L226 Difference]: Without dead ends: 10323 [2021-05-06 00:17:58,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7191 ImplicationChecksByTransitivity, 11429.0ms TimeCoverageRelationStatistics Valid=18450, Invalid=33306, Unknown=0, NotChecked=0, Total=51756 [2021-05-06 00:17:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10323 states. [2021-05-06 00:17:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10323 to 10293. [2021-05-06 00:17:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10293 states, 10288 states have (on average 1.0173989113530326) internal successors, (10467), 10288 states have internal predecessors, (10467), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10293 states to 10293 states and 10471 transitions. [2021-05-06 00:17:58,472 INFO L78 Accepts]: Start accepts. Automaton has 10293 states and 10471 transitions. Word has length 233 [2021-05-06 00:17:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:17:58,473 INFO L480 AbstractCegarLoop]: Abstraction has 10293 states and 10471 transitions. [2021-05-06 00:17:58,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 114 states have internal predecessors, (235), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:17:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10293 states and 10471 transitions. [2021-05-06 00:17:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-06 00:17:58,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:17:58,479 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:17:58,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,110 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:17:58,680 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:17:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:17:58,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1515186940, now seen corresponding path program 10 times [2021-05-06 00:17:58,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:17:58,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815310570] [2021-05-06 00:17:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:17:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:03,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10010 backedges. 0 proven. 10010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:03,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:03,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815310570] [2021-05-06 00:18:03,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815310570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:03,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206567985] [2021-05-06 00:18:03,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:18:03,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 00:18:03,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:18:03,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 113 conjunts are in the unsatisfiable core [2021-05-06 00:18:03,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:18:03,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10010 backedges. 0 proven. 10010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:03,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206567985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:03,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:18:03,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 114] total 118 [2021-05-06 00:18:03,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427962794] [2021-05-06 00:18:03,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-06 00:18:03,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-06 00:18:03,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6340, Invalid=7466, Unknown=0, NotChecked=0, Total=13806 [2021-05-06 00:18:03,915 INFO L87 Difference]: Start difference. First operand 10293 states and 10471 transitions. Second operand has 118 states, 118 states have (on average 2.0084745762711864) internal successors, (237), 115 states have internal predecessors, (237), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:12,638 INFO L93 Difference]: Finished difference Result 10510 states and 10786 transitions. [2021-05-06 00:18:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-06 00:18:12,639 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0084745762711864) internal successors, (237), 115 states have internal predecessors, (237), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 235 [2021-05-06 00:18:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:12,644 INFO L225 Difference]: With dead ends: 10510 [2021-05-06 00:18:12,644 INFO L226 Difference]: Without dead ends: 10303 [2021-05-06 00:18:12,647 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7312 ImplicationChecksByTransitivity, 11632.2ms TimeCoverageRelationStatistics Valid=18784, Invalid=33886, Unknown=0, NotChecked=0, Total=52670 [2021-05-06 00:18:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2021-05-06 00:18:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 10270. [2021-05-06 00:18:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10270 states, 10265 states have (on average 1.0172430589381394) internal successors, (10442), 10265 states have internal predecessors, (10442), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 10446 transitions. [2021-05-06 00:18:12,743 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 10446 transitions. Word has length 235 [2021-05-06 00:18:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:12,743 INFO L480 AbstractCegarLoop]: Abstraction has 10270 states and 10446 transitions. [2021-05-06 00:18:12,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 118 states have (on average 2.0084745762711864) internal successors, (237), 115 states have internal predecessors, (237), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 10446 transitions. [2021-05-06 00:18:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-06 00:18:12,749 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:12,749 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:12,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-05-06 00:18:12,950 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:12,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1699220289, now seen corresponding path program 11 times [2021-05-06 00:18:12,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:12,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802397381] [2021-05-06 00:18:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10032 backedges. 0 proven. 10032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:17,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:17,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802397381] [2021-05-06 00:18:17,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802397381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:17,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481436430] [2021-05-06 00:18:17,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:18:17,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2021-05-06 00:18:17,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:18:17,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-06 00:18:17,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:18:17,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:17,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10032 backedges. 0 proven. 10032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:18,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481436430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:18,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:18:18,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115] total 119 [2021-05-06 00:18:18,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010976339] [2021-05-06 00:18:18,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-06 00:18:18,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:18,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-06 00:18:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6453, Invalid=7589, Unknown=0, NotChecked=0, Total=14042 [2021-05-06 00:18:18,369 INFO L87 Difference]: Start difference. First operand 10270 states and 10446 transitions. Second operand has 119 states, 119 states have (on average 2.008403361344538) internal successors, (239), 116 states have internal predecessors, (239), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:27,121 INFO L93 Difference]: Finished difference Result 10488 states and 10762 transitions. [2021-05-06 00:18:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-06 00:18:27,122 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.008403361344538) internal successors, (239), 116 states have internal predecessors, (239), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-06 00:18:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:27,127 INFO L225 Difference]: With dead ends: 10488 [2021-05-06 00:18:27,127 INFO L226 Difference]: Without dead ends: 10281 [2021-05-06 00:18:27,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7434 ImplicationChecksByTransitivity, 11753.0ms TimeCoverageRelationStatistics Valid=19121, Invalid=34471, Unknown=0, NotChecked=0, Total=53592 [2021-05-06 00:18:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10281 states. [2021-05-06 00:18:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10281 to 10245. [2021-05-06 00:18:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 10240 states have (on average 1.01708984375) internal successors, (10415), 10240 states have internal predecessors, (10415), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 10419 transitions. [2021-05-06 00:18:27,176 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 10419 transitions. Word has length 237 [2021-05-06 00:18:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:27,176 INFO L480 AbstractCegarLoop]: Abstraction has 10245 states and 10419 transitions. [2021-05-06 00:18:27,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 119 states, 119 states have (on average 2.008403361344538) internal successors, (239), 116 states have internal predecessors, (239), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 10419 transitions. [2021-05-06 00:18:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-06 00:18:27,183 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:27,183 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:27,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-06 00:18:27,383 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:27,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1833357754, now seen corresponding path program 12 times [2021-05-06 00:18:27,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:27,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248788166] [2021-05-06 00:18:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:32,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10056 backedges. 0 proven. 10056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:32,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:32,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248788166] [2021-05-06 00:18:32,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248788166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:32,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69150557] [2021-05-06 00:18:32,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:18:32,453 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2021-05-06 00:18:32,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:18:32,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-06 00:18:32,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:18:32,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10056 backedges. 0 proven. 10056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:32,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69150557] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:32,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:18:32,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116] total 120 [2021-05-06 00:18:32,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337774462] [2021-05-06 00:18:32,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-06 00:18:32,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:32,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-06 00:18:32,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6567, Invalid=7713, Unknown=0, NotChecked=0, Total=14280 [2021-05-06 00:18:32,935 INFO L87 Difference]: Start difference. First operand 10245 states and 10419 transitions. Second operand has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 117 states have internal predecessors, (241), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:41,880 INFO L93 Difference]: Finished difference Result 10464 states and 10736 transitions. [2021-05-06 00:18:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-06 00:18:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 117 states have internal predecessors, (241), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-05-06 00:18:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:41,886 INFO L225 Difference]: With dead ends: 10464 [2021-05-06 00:18:41,886 INFO L226 Difference]: Without dead ends: 10257 [2021-05-06 00:18:41,889 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7557 ImplicationChecksByTransitivity, 11885.8ms TimeCoverageRelationStatistics Valid=19461, Invalid=35061, Unknown=0, NotChecked=0, Total=54522 [2021-05-06 00:18:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10257 states. [2021-05-06 00:18:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10257 to 10218. [2021-05-06 00:18:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10218 states, 10213 states have (on average 1.0169391951434446) internal successors, (10386), 10213 states have internal predecessors, (10386), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10218 states to 10218 states and 10390 transitions. [2021-05-06 00:18:41,937 INFO L78 Accepts]: Start accepts. Automaton has 10218 states and 10390 transitions. Word has length 239 [2021-05-06 00:18:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:41,937 INFO L480 AbstractCegarLoop]: Abstraction has 10218 states and 10390 transitions. [2021-05-06 00:18:41,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 117 states have internal predecessors, (241), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 10218 states and 10390 transitions. [2021-05-06 00:18:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-06 00:18:41,944 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:41,944 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:42,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-06 00:18:42,145 INFO L428 AbstractCegarLoop]: === Iteration 115 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:42,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:42,145 INFO L82 PathProgramCache]: Analyzing trace with hash 678274059, now seen corresponding path program 13 times [2021-05-06 00:18:42,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:42,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244636355] [2021-05-06 00:18:42,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:18:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 0 proven. 10082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:47,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:18:47,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244636355] [2021-05-06 00:18:47,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244636355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:47,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336707791] [2021-05-06 00:18:47,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:18:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:18:47,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 116 conjunts are in the unsatisfiable core [2021-05-06 00:18:47,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:18:47,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:18:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10082 backedges. 0 proven. 10082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:18:47,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336707791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:18:47,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:18:47,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 117] total 121 [2021-05-06 00:18:47,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817281110] [2021-05-06 00:18:47,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 121 states [2021-05-06 00:18:47,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:18:47,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-05-06 00:18:47,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6682, Invalid=7838, Unknown=0, NotChecked=0, Total=14520 [2021-05-06 00:18:47,641 INFO L87 Difference]: Start difference. First operand 10218 states and 10390 transitions. Second operand has 121 states, 121 states have (on average 2.0082644628099175) internal successors, (243), 118 states have internal predecessors, (243), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:56,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:18:56,829 INFO L93 Difference]: Finished difference Result 10438 states and 10708 transitions. [2021-05-06 00:18:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-05-06 00:18:56,830 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.0082644628099175) internal successors, (243), 118 states have internal predecessors, (243), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2021-05-06 00:18:56,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:18:56,835 INFO L225 Difference]: With dead ends: 10438 [2021-05-06 00:18:56,835 INFO L226 Difference]: Without dead ends: 10231 [2021-05-06 00:18:56,837 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7681 ImplicationChecksByTransitivity, 12248.8ms TimeCoverageRelationStatistics Valid=19804, Invalid=35656, Unknown=0, NotChecked=0, Total=55460 [2021-05-06 00:18:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10231 states. [2021-05-06 00:18:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10231 to 10189. [2021-05-06 00:18:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10189 states, 10184 states have (on average 1.0167910447761195) internal successors, (10355), 10184 states have internal predecessors, (10355), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10189 states to 10189 states and 10359 transitions. [2021-05-06 00:18:56,881 INFO L78 Accepts]: Start accepts. Automaton has 10189 states and 10359 transitions. Word has length 241 [2021-05-06 00:18:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:18:56,882 INFO L480 AbstractCegarLoop]: Abstraction has 10189 states and 10359 transitions. [2021-05-06 00:18:56,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 121 states, 121 states have (on average 2.0082644628099175) internal successors, (243), 118 states have internal predecessors, (243), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:18:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 10189 states and 10359 transitions. [2021-05-06 00:18:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-05-06 00:18:56,888 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:18:56,888 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:18:57,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-05-06 00:18:57,088 INFO L428 AbstractCegarLoop]: === Iteration 116 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:18:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:18:57,089 INFO L82 PathProgramCache]: Analyzing trace with hash 584826000, now seen corresponding path program 14 times [2021-05-06 00:18:57,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:18:57,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820707012] [2021-05-06 00:18:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:18:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:02,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:19:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10110 backedges. 0 proven. 10110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:02,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:19:02,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820707012] [2021-05-06 00:19:02,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820707012] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:02,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026868504] [2021-05-06 00:19:02,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:19:02,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 00:19:02,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:19:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 117 conjunts are in the unsatisfiable core [2021-05-06 00:19:02,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:19:02,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10110 backedges. 0 proven. 10110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:02,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026868504] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:02,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:19:02,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 118] total 122 [2021-05-06 00:19:02,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32761588] [2021-05-06 00:19:02,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 122 states [2021-05-06 00:19:02,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:19:02,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-05-06 00:19:02,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6798, Invalid=7964, Unknown=0, NotChecked=0, Total=14762 [2021-05-06 00:19:02,686 INFO L87 Difference]: Start difference. First operand 10189 states and 10359 transitions. Second operand has 122 states, 122 states have (on average 2.0081967213114753) internal successors, (245), 119 states have internal predecessors, (245), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:19:11,804 INFO L93 Difference]: Finished difference Result 10410 states and 10678 transitions. [2021-05-06 00:19:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-06 00:19:11,804 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.0081967213114753) internal successors, (245), 119 states have internal predecessors, (245), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 243 [2021-05-06 00:19:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:19:11,808 INFO L225 Difference]: With dead ends: 10410 [2021-05-06 00:19:11,809 INFO L226 Difference]: Without dead ends: 10203 [2021-05-06 00:19:11,811 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7806 ImplicationChecksByTransitivity, 12251.0ms TimeCoverageRelationStatistics Valid=20150, Invalid=36256, Unknown=0, NotChecked=0, Total=56406 [2021-05-06 00:19:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10203 states. [2021-05-06 00:19:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10203 to 10158. [2021-05-06 00:19:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10158 states, 10153 states have (on average 1.0166453265044815) internal successors, (10322), 10153 states have internal predecessors, (10322), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10158 states to 10158 states and 10326 transitions. [2021-05-06 00:19:11,854 INFO L78 Accepts]: Start accepts. Automaton has 10158 states and 10326 transitions. Word has length 243 [2021-05-06 00:19:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:19:11,855 INFO L480 AbstractCegarLoop]: Abstraction has 10158 states and 10326 transitions. [2021-05-06 00:19:11,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 122 states, 122 states have (on average 2.0081967213114753) internal successors, (245), 119 states have internal predecessors, (245), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 10158 states and 10326 transitions. [2021-05-06 00:19:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-06 00:19:11,861 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:19:11,861 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 00:19:12,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:19:12,062 INFO L428 AbstractCegarLoop]: === Iteration 117 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 00:19:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 00:19:12,062 INFO L82 PathProgramCache]: Analyzing trace with hash 975554517, now seen corresponding path program 15 times [2021-05-06 00:19:12,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 00:19:12,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971131607] [2021-05-06 00:19:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 00:19:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:16,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 00:19:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 00:19:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 10140 backedges. 0 proven. 10140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:16,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 00:19:16,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971131607] [2021-05-06 00:19:16,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971131607] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:16,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906686427] [2021-05-06 00:19:16,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 00:19:17,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-06 00:19:17,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 00:19:17,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 118 conjunts are in the unsatisfiable core [2021-05-06 00:19:17,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 00:19:17,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 00:19:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10140 backedges. 0 proven. 10140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 00:19:17,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906686427] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 00:19:17,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 00:19:17,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 119] total 123 [2021-05-06 00:19:17,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555208193] [2021-05-06 00:19:17,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-06 00:19:17,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 00:19:17,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-06 00:19:17,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6915, Invalid=8091, Unknown=0, NotChecked=0, Total=15006 [2021-05-06 00:19:17,774 INFO L87 Difference]: Start difference. First operand 10158 states and 10326 transitions. Second operand has 123 states, 123 states have (on average 2.008130081300813) internal successors, (247), 120 states have internal predecessors, (247), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 00:19:27,015 INFO L93 Difference]: Finished difference Result 10380 states and 10646 transitions. [2021-05-06 00:19:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-05-06 00:19:27,015 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.008130081300813) internal successors, (247), 120 states have internal predecessors, (247), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2021-05-06 00:19:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 00:19:27,020 INFO L225 Difference]: With dead ends: 10380 [2021-05-06 00:19:27,020 INFO L226 Difference]: Without dead ends: 10173 [2021-05-06 00:19:27,023 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7932 ImplicationChecksByTransitivity, 12341.2ms TimeCoverageRelationStatistics Valid=20499, Invalid=36861, Unknown=0, NotChecked=0, Total=57360 [2021-05-06 00:19:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10173 states. [2021-05-06 00:19:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10173 to 10125. [2021-05-06 00:19:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10125 states, 10120 states have (on average 1.016501976284585) internal successors, (10287), 10120 states have internal predecessors, (10287), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10125 states to 10125 states and 10291 transitions. [2021-05-06 00:19:27,071 INFO L78 Accepts]: Start accepts. Automaton has 10125 states and 10291 transitions. Word has length 245 [2021-05-06 00:19:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 00:19:27,071 INFO L480 AbstractCegarLoop]: Abstraction has 10125 states and 10291 transitions. [2021-05-06 00:19:27,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 123 states, 123 states have (on average 2.008130081300813) internal successors, (247), 120 states have internal predecessors, (247), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 00:19:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10125 states and 10291 transitions. [2021-05-06 00:19:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-06 00:19:27,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 00:19:27,077 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]