/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/loops-crafted-1/mono-crafted_14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:07:05,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:07:05,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:07:05,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:07:05,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:07:05,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:07:05,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:07:05,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:07:05,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:07:05,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:07:05,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:07:05,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:07:05,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:07:05,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:07:05,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:07:05,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:07:05,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:07:05,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:07:05,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:07:05,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:07:05,806 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 [2021-05-02 13:07:05,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:07:05,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:07:05,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:07:05,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:07:05,869 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:07:05,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:07:05,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:07:05,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:07:05,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:07:05,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:07:05,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:07:05,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:07:05,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:07:05,872 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:07:05,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:07:05,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:07:05,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:07:05,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:07:05,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:07:05,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:07:05,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:07:05,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:07:05,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:07:05,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:07:05,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:07:05,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:07:05,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:07:05,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:07:05,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:07:06,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:07:06,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:07:06,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:07:06,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:07:06,282 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:07:06,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c [2021-05-02 13:07:06,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68f6d3ea4/62f971b38358423db33336cbdac4171f/FLAG7f5d0285e [2021-05-02 13:07:06,815 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:07:06,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c [2021-05-02 13:07:06,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68f6d3ea4/62f971b38358423db33336cbdac4171f/FLAG7f5d0285e [2021-05-02 13:07:06,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68f6d3ea4/62f971b38358423db33336cbdac4171f [2021-05-02 13:07:06,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:07:06,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:07:06,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:07:06,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:07:06,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:07:06,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:07:06" (1/1) ... [2021-05-02 13:07:06,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b717d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:06, skipping insertion in model container [2021-05-02 13:07:06,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:07:06" (1/1) ... [2021-05-02 13:07:06,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:07:06,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:07:07,036 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c[319,332] [2021-05-02 13:07:07,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:07:07,066 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:07:07,134 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_14.c[319,332] [2021-05-02 13:07:07,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:07:07,161 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:07:07,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07 WrapperNode [2021-05-02 13:07:07,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:07:07,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:07:07,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:07:07,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:07:07,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (1/1) ... [2021-05-02 13:07:07,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (1/1) ... [2021-05-02 13:07:07,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (1/1) ... [2021-05-02 13:07:07,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (1/1) ... [2021-05-02 13:07:07,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (1/1) ... [2021-05-02 13:07:07,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (1/1) ... [2021-05-02 13:07:07,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (1/1) ... [2021-05-02 13:07:07,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:07:07,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:07:07,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:07:07,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:07:07,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (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 [2021-05-02 13:07:07,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:07:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:07:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:07:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:07:07,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:07:07,293 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 13:07:07,293 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:07:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:07:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:07:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:07:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:07:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:07:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:07:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:07:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:07:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:07:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:07:07,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:07:07,564 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 13:07:07,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:07:07 BoogieIcfgContainer [2021-05-02 13:07:07,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:07:07,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:07:07,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:07:07,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:07:07,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:07:06" (1/3) ... [2021-05-02 13:07:07,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e63a7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:07:07, skipping insertion in model container [2021-05-02 13:07:07,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:07:07" (2/3) ... [2021-05-02 13:07:07,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e63a7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:07:07, skipping insertion in model container [2021-05-02 13:07:07,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:07:07" (3/3) ... [2021-05-02 13:07:07,572 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_14.c [2021-05-02 13:07:07,577 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:07:07,580 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:07:07,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:07:07,614 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:07:07,614 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:07:07,614 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:07:07,614 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:07:07,614 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:07:07,615 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:07:07,615 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:07:07,615 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:07:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 13:07:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:07:07,650 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:07,651 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:07,664 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1104150160, now seen corresponding path program 1 times [2021-05-02 13:07:07,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:07,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927871058] [2021-05-02 13:07:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:07:07,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:07,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927871058] [2021-05-02 13:07:07,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927871058] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:07:07,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:07:07,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 13:07:07,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107160147] [2021-05-02 13:07:07,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 13:07:07,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 13:07:07,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 13:07:07,956 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-02 13:07:08,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:08,045 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2021-05-02 13:07:08,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 13:07:08,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2021-05-02 13:07:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:08,054 INFO L225 Difference]: With dead ends: 36 [2021-05-02 13:07:08,055 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 13:07:08,060 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 13:07:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 13:07:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 13:07:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-05-02 13:07:08,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2021-05-02 13:07:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:08,097 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-05-02 13:07:08,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-02 13:07:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-05-02 13:07:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:07:08,099 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:08,099 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:08,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:07:08,099 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:08,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1394135754, now seen corresponding path program 1 times [2021-05-02 13:07:08,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:08,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287152807] [2021-05-02 13:07:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:08,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:07:08,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:08,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287152807] [2021-05-02 13:07:08,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287152807] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:07:08,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:07:08,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 13:07:08,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791379701] [2021-05-02 13:07:08,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 13:07:08,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:08,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 13:07:08,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:07:08,180 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-05-02 13:07:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:08,246 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-05-02 13:07:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 13:07:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2021-05-02 13:07:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:08,248 INFO L225 Difference]: With dead ends: 30 [2021-05-02 13:07:08,248 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 13:07:08,249 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:07:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 13:07:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 13:07:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-05-02 13:07:08,255 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2021-05-02 13:07:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:08,255 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-05-02 13:07:08,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-05-02 13:07:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-05-02 13:07:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 13:07:08,256 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:08,256 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:08,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 13:07:08,256 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:08,257 INFO L82 PathProgramCache]: Analyzing trace with hash 479542393, now seen corresponding path program 1 times [2021-05-02 13:07:08,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:08,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430272855] [2021-05-02 13:07:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:08,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:08,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430272855] [2021-05-02 13:07:08,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430272855] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:07:08,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:07:08,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 13:07:08,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932144160] [2021-05-02 13:07:08,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 13:07:08,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:08,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 13:07:08,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:07:08,379 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-05-02 13:07:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:08,478 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-02 13:07:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 13:07:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 14 [2021-05-02 13:07:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:08,480 INFO L225 Difference]: With dead ends: 28 [2021-05-02 13:07:08,480 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 13:07:08,481 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:07:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 13:07:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-02 13:07:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-05-02 13:07:08,499 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2021-05-02 13:07:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:08,500 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-05-02 13:07:08,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-05-02 13:07:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-05-02 13:07:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 13:07:08,501 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:08,501 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:08,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 13:07:08,501 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:08,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2015526538, now seen corresponding path program 1 times [2021-05-02 13:07:08,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:08,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403885902] [2021-05-02 13:07:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:08,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:08,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:08,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403885902] [2021-05-02 13:07:08,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403885902] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:08,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181125383] [2021-05-02 13:07:08,580 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 [2021-05-02 13:07:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:08,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 13:07:08,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:08,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:08,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:08,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181125383] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:08,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:08,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 13:07:08,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409916758] [2021-05-02 13:07:08,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 13:07:08,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:08,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 13:07:08,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:07:08,819 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:08,910 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-05-02 13:07:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 13:07:08,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 13:07:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:08,911 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:07:08,911 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 13:07:08,913 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 13:07:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 13:07:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 13:07:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-05-02 13:07:08,929 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2021-05-02 13:07:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:08,929 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-05-02 13:07:08,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-05-02 13:07:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 13:07:08,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:08,931 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:09,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:09,154 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:09,155 INFO L82 PathProgramCache]: Analyzing trace with hash -928742297, now seen corresponding path program 2 times [2021-05-02 13:07:09,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:09,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526224431] [2021-05-02 13:07:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 13:07:09,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:09,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526224431] [2021-05-02 13:07:09,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526224431] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:07:09,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:07:09,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 13:07:09,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838296152] [2021-05-02 13:07:09,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 13:07:09,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:09,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 13:07:09,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:07:09,243 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-05-02 13:07:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:09,309 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-05-02 13:07:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 13:07:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 [2021-05-02 13:07:09,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:09,312 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:07:09,312 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 13:07:09,313 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:07:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 13:07:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-05-02 13:07:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-05-02 13:07:09,325 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2021-05-02 13:07:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:09,325 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-05-02 13:07:09,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-05-02 13:07:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-05-02 13:07:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 13:07:09,330 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:09,330 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:09,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 13:07:09,330 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:09,331 INFO L82 PathProgramCache]: Analyzing trace with hash -796991294, now seen corresponding path program 1 times [2021-05-02 13:07:09,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:09,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578806991] [2021-05-02 13:07:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:09,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:09,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578806991] [2021-05-02 13:07:09,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578806991] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:09,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061587871] [2021-05-02 13:07:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-02 13:07:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:09,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 13:07:09,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:09,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:09,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:09,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:09,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:09,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061587871] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:09,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:09,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 13:07:09,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063480648] [2021-05-02 13:07:09,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 13:07:09,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:09,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 13:07:09,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 13:07:09,606 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:09,732 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-05-02 13:07:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:07:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 13:07:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:09,734 INFO L225 Difference]: With dead ends: 38 [2021-05-02 13:07:09,734 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 13:07:09,735 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 97.6ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 13:07:09,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 13:07:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 13:07:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-05-02 13:07:09,747 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2021-05-02 13:07:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:09,748 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-05-02 13:07:09,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-05-02 13:07:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 13:07:09,750 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:09,750 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:09,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:09,969 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:09,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:09,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1654698015, now seen corresponding path program 2 times [2021-05-02 13:07:09,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:09,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240051874] [2021-05-02 13:07:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:10,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:10,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:10,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240051874] [2021-05-02 13:07:10,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240051874] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:10,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324783561] [2021-05-02 13:07:10,107 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 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 [2021-05-02 13:07:10,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:07:10,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:10,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 13:07:10,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:10,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:10,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324783561] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:10,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:10,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 13:07:10,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46128898] [2021-05-02 13:07:10,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 13:07:10,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:10,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 13:07:10,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 13:07:10,279 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:10,438 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2021-05-02 13:07:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 13:07:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 13:07:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:10,439 INFO L225 Difference]: With dead ends: 40 [2021-05-02 13:07:10,439 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 13:07:10,440 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 13:07:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 13:07:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 13:07:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-02 13:07:10,448 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-05-02 13:07:10,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:10,449 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-02 13:07:10,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-02 13:07:10,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 13:07:10,450 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:10,450 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:10,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:10,653 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:10,654 INFO L82 PathProgramCache]: Analyzing trace with hash -208921540, now seen corresponding path program 3 times [2021-05-02 13:07:10,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:10,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661532388] [2021-05-02 13:07:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 13:07:10,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:10,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661532388] [2021-05-02 13:07:10,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661532388] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:10,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716759658] [2021-05-02 13:07:10,714 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 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 [2021-05-02 13:07:10,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 13:07:10,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:10,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 13:07:10,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:10,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-02 13:07:10,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716759658] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:10,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:10,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-05-02 13:07:10,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677638192] [2021-05-02 13:07:10,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 13:07:10,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:10,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 13:07:10,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 13:07:10,820 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:11,096 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-05-02 13:07:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 13:07:11,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 13:07:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:11,098 INFO L225 Difference]: With dead ends: 45 [2021-05-02 13:07:11,098 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 13:07:11,098 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 219.9ms TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-05-02 13:07:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 13:07:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-05-02 13:07:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 13:07:11,102 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 23 [2021-05-02 13:07:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:11,102 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 13:07:11,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 13:07:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 13:07:11,103 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:11,103 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:11,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:11,324 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash -194913814, now seen corresponding path program 4 times [2021-05-02 13:07:11,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:11,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609907220] [2021-05-02 13:07:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 13:07:11,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:11,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609907220] [2021-05-02 13:07:11,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609907220] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:11,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312185569] [2021-05-02 13:07:11,413 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 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 [2021-05-02 13:07:11,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:07:11,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:11,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 13:07:11,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:11,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 13:07:11,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312185569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:11,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:11,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 13:07:11,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85133698] [2021-05-02 13:07:11,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 13:07:11,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:11,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 13:07:11,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 13:07:11,530 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:11,703 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-05-02 13:07:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 13:07:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-05-02 13:07:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:11,704 INFO L225 Difference]: With dead ends: 46 [2021-05-02 13:07:11,704 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 13:07:11,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 13:07:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 13:07:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 13:07:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-02 13:07:11,708 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 26 [2021-05-02 13:07:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:11,708 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-02 13:07:11,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-02 13:07:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 13:07:11,709 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:11,709 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:11,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:11,936 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:11,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1154058259, now seen corresponding path program 5 times [2021-05-02 13:07:11,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:11,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066057977] [2021-05-02 13:07:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 13:07:12,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:12,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066057977] [2021-05-02 13:07:12,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066057977] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:12,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905225662] [2021-05-02 13:07:12,006 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 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 [2021-05-02 13:07:12,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 13:07:12,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:12,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 13:07:12,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:12,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 13:07:12,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905225662] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:12,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:12,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 13:07:12,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670444078] [2021-05-02 13:07:12,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 13:07:12,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 13:07:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 13:07:12,108 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:12,306 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-05-02 13:07:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 13:07:12,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-05-02 13:07:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:12,307 INFO L225 Difference]: With dead ends: 48 [2021-05-02 13:07:12,307 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 13:07:12,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 13:07:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 13:07:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 13:07:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-05-02 13:07:12,312 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 28 [2021-05-02 13:07:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:12,312 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-05-02 13:07:12,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-05-02 13:07:12,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 13:07:12,313 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:12,313 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:12,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:12,530 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:12,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:12,531 INFO L82 PathProgramCache]: Analyzing trace with hash 526098736, now seen corresponding path program 6 times [2021-05-02 13:07:12,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:12,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580128258] [2021-05-02 13:07:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:12,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 13:07:12,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:12,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580128258] [2021-05-02 13:07:12,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580128258] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:12,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383770951] [2021-05-02 13:07:12,640 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 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 [2021-05-02 13:07:12,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-05-02 13:07:12,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:12,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 13:07:12,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-05-02 13:07:12,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383770951] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:12,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:12,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-05-02 13:07:12,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891089382] [2021-05-02 13:07:12,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 13:07:12,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:12,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 13:07:12,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-02 13:07:12,756 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:13,137 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-05-02 13:07:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 13:07:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-05-02 13:07:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:13,138 INFO L225 Difference]: With dead ends: 53 [2021-05-02 13:07:13,138 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 13:07:13,139 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 334.2ms TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2021-05-02 13:07:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 13:07:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-05-02 13:07:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-05-02 13:07:13,143 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 30 [2021-05-02 13:07:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:13,143 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-05-02 13:07:13,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-05-02 13:07:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 13:07:13,144 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:13,144 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:13,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:13,361 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash -828023664, now seen corresponding path program 7 times [2021-05-02 13:07:13,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:13,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928991323] [2021-05-02 13:07:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 13:07:13,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:13,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928991323] [2021-05-02 13:07:13,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928991323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:13,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56919477] [2021-05-02 13:07:13,449 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 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 [2021-05-02 13:07:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:13,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 13:07:13,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:13,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 13:07:13,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56919477] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:13,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:13,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-05-02 13:07:13,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929025663] [2021-05-02 13:07:13,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 13:07:13,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:13,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 13:07:13,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 13:07:13,573 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:13,824 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-05-02 13:07:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 13:07:13,825 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-02 13:07:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:13,826 INFO L225 Difference]: With dead ends: 54 [2021-05-02 13:07:13,826 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 13:07:13,826 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 252.7ms TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-05-02 13:07:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 13:07:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 13:07:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-05-02 13:07:13,831 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 33 [2021-05-02 13:07:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:13,831 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-05-02 13:07:13,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-05-02 13:07:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 13:07:13,832 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:13,832 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:14,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 13:07:14,052 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1566145235, now seen corresponding path program 8 times [2021-05-02 13:07:14,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:14,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948410674] [2021-05-02 13:07:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 13:07:14,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:14,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948410674] [2021-05-02 13:07:14,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948410674] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:14,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812751442] [2021-05-02 13:07:14,161 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 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 [2021-05-02 13:07:14,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:07:14,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:14,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 13:07:14,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:14,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 13:07:14,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812751442] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:14,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:14,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2021-05-02 13:07:14,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918370296] [2021-05-02 13:07:14,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 13:07:14,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:14,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 13:07:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 13:07:14,280 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:14,575 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-05-02 13:07:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 13:07:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 13:07:14,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:14,576 INFO L225 Difference]: With dead ends: 56 [2021-05-02 13:07:14,576 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 13:07:14,577 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 261.5ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 13:07:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 13:07:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 13:07:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-05-02 13:07:14,582 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 35 [2021-05-02 13:07:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:14,582 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-05-02 13:07:14,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-05-02 13:07:14,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 13:07:14,583 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:14,583 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:14,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:14,803 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2063596170, now seen corresponding path program 9 times [2021-05-02 13:07:14,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:14,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338156928] [2021-05-02 13:07:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 13:07:14,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:14,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338156928] [2021-05-02 13:07:14,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338156928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:14,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492866881] [2021-05-02 13:07:14,906 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 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 [2021-05-02 13:07:14,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 13:07:14,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:14,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 13:07:14,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:15,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-05-02 13:07:15,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492866881] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:15,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:15,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 19 [2021-05-02 13:07:15,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568770586] [2021-05-02 13:07:15,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 13:07:15,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 13:07:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-05-02 13:07:15,081 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:15,596 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2021-05-02 13:07:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 13:07:15,597 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 13:07:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:15,597 INFO L225 Difference]: With dead ends: 61 [2021-05-02 13:07:15,597 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 13:07:15,598 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 495.0ms TimeCoverageRelationStatistics Valid=382, Invalid=808, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 13:07:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 13:07:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-05-02 13:07:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-05-02 13:07:15,602 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 37 [2021-05-02 13:07:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:15,602 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-05-02 13:07:15,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-05-02 13:07:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 13:07:15,603 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:15,603 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:15,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:15,824 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:15,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1183828964, now seen corresponding path program 10 times [2021-05-02 13:07:15,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:15,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009845214] [2021-05-02 13:07:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 13:07:15,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:15,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009845214] [2021-05-02 13:07:15,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009845214] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:15,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106569648] [2021-05-02 13:07:15,934 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 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 [2021-05-02 13:07:16,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:07:16,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:16,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 13:07:16,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:16,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 13:07:16,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106569648] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:16,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:16,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 13:07:16,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440661119] [2021-05-02 13:07:16,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 13:07:16,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:16,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 13:07:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 13:07:16,096 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:16,455 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-05-02 13:07:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 13:07:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-05-02 13:07:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:16,456 INFO L225 Difference]: With dead ends: 62 [2021-05-02 13:07:16,456 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 13:07:16,457 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 340.5ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 13:07:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 13:07:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 13:07:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2021-05-02 13:07:16,461 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 40 [2021-05-02 13:07:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:16,462 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2021-05-02 13:07:16,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2021-05-02 13:07:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-02 13:07:16,462 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:16,462 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:16,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 13:07:16,682 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:16,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1986695391, now seen corresponding path program 11 times [2021-05-02 13:07:16,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:16,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484488584] [2021-05-02 13:07:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 13:07:16,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:16,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484488584] [2021-05-02 13:07:16,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484488584] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:16,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857875119] [2021-05-02 13:07:16,804 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 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 [2021-05-02 13:07:16,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-05-02 13:07:16,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:16,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 13:07:16,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:16,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 13:07:16,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857875119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:16,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:16,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2021-05-02 13:07:16,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637091359] [2021-05-02 13:07:16,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 13:07:16,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:16,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 13:07:16,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 13:07:16,961 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:17,326 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-05-02 13:07:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 13:07:17,326 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-05-02 13:07:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:17,327 INFO L225 Difference]: With dead ends: 64 [2021-05-02 13:07:17,327 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 13:07:17,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 366.2ms TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2021-05-02 13:07:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 13:07:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 13:07:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-05-02 13:07:17,332 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 42 [2021-05-02 13:07:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:17,333 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-05-02 13:07:17,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-05-02 13:07:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 13:07:17,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:17,333 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:17,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 13:07:17,537 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:17,538 INFO L82 PathProgramCache]: Analyzing trace with hash -566179614, now seen corresponding path program 12 times [2021-05-02 13:07:17,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:17,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011942279] [2021-05-02 13:07:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 13:07:17,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:17,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011942279] [2021-05-02 13:07:17,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011942279] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:17,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426430721] [2021-05-02 13:07:17,676 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 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 [2021-05-02 13:07:17,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-02 13:07:17,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:17,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 13:07:17,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-05-02 13:07:17,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426430721] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:17,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:17,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 23 [2021-05-02 13:07:17,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952523544] [2021-05-02 13:07:17,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 13:07:17,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:17,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 13:07:17,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-05-02 13:07:17,856 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:18,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:18,562 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2021-05-02 13:07:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 13:07:18,562 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-05-02 13:07:18,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:18,563 INFO L225 Difference]: With dead ends: 69 [2021-05-02 13:07:18,563 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 13:07:18,563 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 666.5ms TimeCoverageRelationStatistics Valid=581, Invalid=1225, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 13:07:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 13:07:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-05-02 13:07:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 45 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-05-02 13:07:18,568 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 44 [2021-05-02 13:07:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:18,568 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-05-02 13:07:18,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2021-05-02 13:07:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 13:07:18,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:18,569 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:18,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 13:07:18,789 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:18,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2050448290, now seen corresponding path program 13 times [2021-05-02 13:07:18,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:18,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555955240] [2021-05-02 13:07:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 13:07:18,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:18,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555955240] [2021-05-02 13:07:18,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555955240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:18,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081830323] [2021-05-02 13:07:18,946 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 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 [2021-05-02 13:07:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:18,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 13:07:18,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:19,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 13:07:19,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081830323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:19,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:19,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 13:07:19,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049462368] [2021-05-02 13:07:19,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 13:07:19,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:19,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 13:07:19,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 13:07:19,088 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:19,513 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-05-02 13:07:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 13:07:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-02 13:07:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:19,514 INFO L225 Difference]: With dead ends: 70 [2021-05-02 13:07:19,514 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 13:07:19,515 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 457.3ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 13:07:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 13:07:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-05-02 13:07:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2021-05-02 13:07:19,520 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 47 [2021-05-02 13:07:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:19,520 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2021-05-02 13:07:19,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2021-05-02 13:07:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 13:07:19,521 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:19,521 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:19,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:19,740 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:19,740 INFO L82 PathProgramCache]: Analyzing trace with hash 674494011, now seen corresponding path program 14 times [2021-05-02 13:07:19,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:19,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365705605] [2021-05-02 13:07:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 13:07:19,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:19,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365705605] [2021-05-02 13:07:19,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365705605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:19,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239444640] [2021-05-02 13:07:19,895 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 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 [2021-05-02 13:07:19,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:07:19,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:19,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 13:07:19,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:19,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:19,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 13:07:20,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239444640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:20,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:20,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 13:07:20,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736801000] [2021-05-02 13:07:20,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 13:07:20,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:20,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 13:07:20,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-05-02 13:07:20,038 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:20,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:20,553 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-02 13:07:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 13:07:20,553 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 13:07:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:20,554 INFO L225 Difference]: With dead ends: 72 [2021-05-02 13:07:20,554 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 13:07:20,555 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 511.0ms TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 13:07:20,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 13:07:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-05-02 13:07:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-05-02 13:07:20,559 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 49 [2021-05-02 13:07:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:20,559 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-05-02 13:07:20,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-05-02 13:07:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 13:07:20,560 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:20,560 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:20,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:20,766 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:20,767 INFO L82 PathProgramCache]: Analyzing trace with hash -586005288, now seen corresponding path program 15 times [2021-05-02 13:07:20,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:20,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954841038] [2021-05-02 13:07:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 17 proven. 272 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 13:07:20,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:20,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954841038] [2021-05-02 13:07:20,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954841038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:20,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351828343] [2021-05-02 13:07:20,990 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 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 [2021-05-02 13:07:21,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 13:07:21,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:21,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 13:07:21,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:21,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:21,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:21,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-05-02 13:07:21,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351828343] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:21,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:21,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 4] total 22 [2021-05-02 13:07:21,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704034267] [2021-05-02 13:07:21,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 13:07:21,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:21,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 13:07:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 13:07:21,121 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:21,683 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2021-05-02 13:07:21,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 13:07:21,684 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-02 13:07:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:21,685 INFO L225 Difference]: With dead ends: 77 [2021-05-02 13:07:21,685 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 13:07:21,686 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 605.3ms TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 13:07:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 13:07:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-05-02 13:07:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 53 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-05-02 13:07:21,692 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 51 [2021-05-02 13:07:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:21,692 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-05-02 13:07:21,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-05-02 13:07:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 13:07:21,693 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:21,693 INFO L523 BasicCegarLoop]: trace histogram [19, 17, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:21,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:21,904 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:21,905 INFO L82 PathProgramCache]: Analyzing trace with hash 16690064, now seen corresponding path program 16 times [2021-05-02 13:07:21,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:21,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657166596] [2021-05-02 13:07:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:22,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 54 proven. 306 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 13:07:22,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:22,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657166596] [2021-05-02 13:07:22,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657166596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:22,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539671789] [2021-05-02 13:07:22,186 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 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 [2021-05-02 13:07:22,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:07:22,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:22,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 13:07:22,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:22,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 54 proven. 306 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 13:07:22,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539671789] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:22,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:22,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 13:07:22,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158732491] [2021-05-02 13:07:22,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 13:07:22,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:22,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 13:07:22,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 13:07:22,353 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:22,879 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-05-02 13:07:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 13:07:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-02 13:07:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:22,881 INFO L225 Difference]: With dead ends: 80 [2021-05-02 13:07:22,881 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 13:07:22,882 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 575.0ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 13:07:22,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 13:07:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-05-02 13:07:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 55 states have internal predecessors, (59), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-05-02 13:07:22,893 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 55 [2021-05-02 13:07:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:22,894 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-05-02 13:07:22,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-05-02 13:07:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 13:07:22,895 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:22,895 INFO L523 BasicCegarLoop]: trace histogram [20, 18, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:23,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 13:07:23,115 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:23,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1365454739, now seen corresponding path program 17 times [2021-05-02 13:07:23,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:23,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486436046] [2021-05-02 13:07:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 57 proven. 342 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 13:07:23,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:23,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486436046] [2021-05-02 13:07:23,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486436046] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:23,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506902265] [2021-05-02 13:07:23,311 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 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 [2021-05-02 13:07:23,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2021-05-02 13:07:23,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:23,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 13:07:23,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:23,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 57 proven. 342 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 13:07:23,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506902265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:23,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:23,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 23 [2021-05-02 13:07:23,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582717471] [2021-05-02 13:07:23,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 13:07:23,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:23,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 13:07:23,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 13:07:23,530 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:24,105 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2021-05-02 13:07:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 13:07:24,106 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 13:07:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:24,106 INFO L225 Difference]: With dead ends: 82 [2021-05-02 13:07:24,106 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 13:07:24,107 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 593.9ms TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 13:07:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 13:07:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-05-02 13:07:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 57 states have internal predecessors, (61), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-05-02 13:07:24,112 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 57 [2021-05-02 13:07:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:24,113 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-05-02 13:07:24,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-05-02 13:07:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 13:07:24,113 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:24,113 INFO L523 BasicCegarLoop]: trace histogram [21, 19, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:24,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 13:07:24,333 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:24,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1833251338, now seen corresponding path program 18 times [2021-05-02 13:07:24,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:24,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999646625] [2021-05-02 13:07:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:24,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 60 proven. 380 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 13:07:24,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:24,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999646625] [2021-05-02 13:07:24,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999646625] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:24,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710263313] [2021-05-02 13:07:24,584 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 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 [2021-05-02 13:07:24,633 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 13:07:24,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:24,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 13:07:24,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:24,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 61 proven. 15 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-05-02 13:07:24,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710263313] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:24,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:24,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2021-05-02 13:07:24,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852381784] [2021-05-02 13:07:24,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 13:07:24,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:24,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 13:07:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=602, Unknown=0, NotChecked=0, Total=870 [2021-05-02 13:07:24,805 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:25,826 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-05-02 13:07:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 13:07:25,826 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-02 13:07:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:25,827 INFO L225 Difference]: With dead ends: 91 [2021-05-02 13:07:25,827 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 13:07:25,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1065.9ms TimeCoverageRelationStatistics Valid=998, Invalid=2194, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 13:07:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 13:07:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2021-05-02 13:07:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-05-02 13:07:25,832 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 59 [2021-05-02 13:07:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:25,833 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-05-02 13:07:25,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-05-02 13:07:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-02 13:07:25,833 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:25,833 INFO L523 BasicCegarLoop]: trace histogram [22, 20, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:26,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 13:07:26,052 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:26,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1244174428, now seen corresponding path program 19 times [2021-05-02 13:07:26,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:26,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181030470] [2021-05-02 13:07:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 63 proven. 420 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-05-02 13:07:26,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:26,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181030470] [2021-05-02 13:07:26,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181030470] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:26,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843353840] [2021-05-02 13:07:26,285 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 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 [2021-05-02 13:07:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:26,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 13:07:26,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:26,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 63 proven. 420 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-05-02 13:07:26,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843353840] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:26,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:26,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 13:07:26,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648025000] [2021-05-02 13:07:26,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 13:07:26,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:26,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 13:07:26,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 13:07:26,449 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:27,137 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-02 13:07:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 13:07:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-05-02 13:07:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:27,139 INFO L225 Difference]: With dead ends: 88 [2021-05-02 13:07:27,139 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 13:07:27,140 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 711.0ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 13:07:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 13:07:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-02 13:07:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-05-02 13:07:27,144 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 62 [2021-05-02 13:07:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:27,144 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-05-02 13:07:27,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-05-02 13:07:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 13:07:27,145 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:27,145 INFO L523 BasicCegarLoop]: trace histogram [23, 21, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:27,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 13:07:27,365 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:27,366 INFO L82 PathProgramCache]: Analyzing trace with hash 108900575, now seen corresponding path program 20 times [2021-05-02 13:07:27,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:27,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493174802] [2021-05-02 13:07:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:27,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 66 proven. 462 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-05-02 13:07:27,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:27,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493174802] [2021-05-02 13:07:27,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493174802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:27,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169480094] [2021-05-02 13:07:27,613 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 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 [2021-05-02 13:07:27,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:07:27,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:27,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 13:07:27,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:27,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 66 proven. 462 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-05-02 13:07:27,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169480094] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:27,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:27,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2021-05-02 13:07:27,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368734697] [2021-05-02 13:07:27,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 13:07:27,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 13:07:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 13:07:27,811 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:28,534 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-02 13:07:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 13:07:28,535 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-05-02 13:07:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:28,535 INFO L225 Difference]: With dead ends: 90 [2021-05-02 13:07:28,535 INFO L226 Difference]: Without dead ends: 70 [2021-05-02 13:07:28,536 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 763.6ms TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 13:07:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-02 13:07:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-02 13:07:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 64 states have internal predecessors, (68), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-05-02 13:07:28,540 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 64 [2021-05-02 13:07:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:28,541 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-05-02 13:07:28,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-05-02 13:07:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 13:07:28,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:28,541 INFO L523 BasicCegarLoop]: trace histogram [24, 22, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:28,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 13:07:28,760 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:28,761 INFO L82 PathProgramCache]: Analyzing trace with hash 32421026, now seen corresponding path program 21 times [2021-05-02 13:07:28,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:28,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489242786] [2021-05-02 13:07:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 69 proven. 506 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-05-02 13:07:29,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:29,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489242786] [2021-05-02 13:07:29,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489242786] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:29,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812578298] [2021-05-02 13:07:29,035 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 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 [2021-05-02 13:07:29,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 13:07:29,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:29,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 13:07:29,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:29,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-05-02 13:07:29,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812578298] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:29,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:29,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 10] total 34 [2021-05-02 13:07:29,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193495454] [2021-05-02 13:07:29,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 13:07:29,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 13:07:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=776, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 13:07:29,280 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:30,449 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2021-05-02 13:07:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 13:07:30,450 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-05-02 13:07:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:30,450 INFO L225 Difference]: With dead ends: 99 [2021-05-02 13:07:30,450 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 13:07:30,451 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1340.8ms TimeCoverageRelationStatistics Valid=1308, Invalid=2852, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 13:07:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 13:07:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2021-05-02 13:07:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 67 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-05-02 13:07:30,456 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 66 [2021-05-02 13:07:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:30,456 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-05-02 13:07:30,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 33 states have internal predecessors, (72), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-05-02 13:07:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 13:07:30,457 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:30,457 INFO L523 BasicCegarLoop]: trace histogram [25, 23, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:30,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:30,675 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:30,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1029911330, now seen corresponding path program 22 times [2021-05-02 13:07:30,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:30,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918908785] [2021-05-02 13:07:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 72 proven. 552 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 13:07:30,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:30,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918908785] [2021-05-02 13:07:30,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918908785] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:30,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810182835] [2021-05-02 13:07:30,949 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 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 [2021-05-02 13:07:30,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:07:30,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:30,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 13:07:30,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:31,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 72 proven. 552 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 13:07:31,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810182835] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:31,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:31,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 13:07:31,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060997400] [2021-05-02 13:07:31,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 13:07:31,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:31,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 13:07:31,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 13:07:31,160 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:32,015 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2021-05-02 13:07:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 13:07:32,015 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 13:07:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:32,016 INFO L225 Difference]: With dead ends: 96 [2021-05-02 13:07:32,016 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 13:07:32,017 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 907.9ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 13:07:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 13:07:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-05-02 13:07:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 69 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-05-02 13:07:32,021 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 69 [2021-05-02 13:07:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:32,022 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-05-02 13:07:32,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-05-02 13:07:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 13:07:32,022 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:32,022 INFO L523 BasicCegarLoop]: trace histogram [26, 24, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:32,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 13:07:32,241 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:32,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1323914501, now seen corresponding path program 23 times [2021-05-02 13:07:32,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:32,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461757907] [2021-05-02 13:07:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 75 proven. 600 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 13:07:32,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:32,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461757907] [2021-05-02 13:07:32,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461757907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:32,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23379691] [2021-05-02 13:07:32,543 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 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 [2021-05-02 13:07:32,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2021-05-02 13:07:32,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:32,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 13:07:32,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 75 proven. 600 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 13:07:32,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23379691] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:32,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:32,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 29 [2021-05-02 13:07:32,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488449151] [2021-05-02 13:07:32,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 13:07:32,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 13:07:32,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 13:07:32,741 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:33,650 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-05-02 13:07:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 13:07:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-02 13:07:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:33,652 INFO L225 Difference]: With dead ends: 98 [2021-05-02 13:07:33,652 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 13:07:33,653 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 987.7ms TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 13:07:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 13:07:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-05-02 13:07:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 71 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-05-02 13:07:33,657 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 71 [2021-05-02 13:07:33,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:33,657 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-05-02 13:07:33,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-05-02 13:07:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 13:07:33,658 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:33,658 INFO L523 BasicCegarLoop]: trace histogram [27, 25, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:33,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:33,876 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:33,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:33,876 INFO L82 PathProgramCache]: Analyzing trace with hash -393120296, now seen corresponding path program 24 times [2021-05-02 13:07:33,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:33,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359358928] [2021-05-02 13:07:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 78 proven. 650 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 13:07:34,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:34,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359358928] [2021-05-02 13:07:34,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359358928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:34,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807995391] [2021-05-02 13:07:34,187 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 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 [2021-05-02 13:07:34,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-05-02 13:07:34,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:34,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 13:07:34,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 79 proven. 28 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-05-02 13:07:34,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807995391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:34,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:34,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2021-05-02 13:07:34,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466081907] [2021-05-02 13:07:34,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 13:07:34,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:34,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 13:07:34,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=972, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 13:07:34,465 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:35,981 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2021-05-02 13:07:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 13:07:35,981 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 13:07:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:35,982 INFO L225 Difference]: With dead ends: 107 [2021-05-02 13:07:35,982 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 13:07:35,983 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 1628.8ms TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:07:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 13:07:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-05-02 13:07:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 74 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-05-02 13:07:35,988 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 73 [2021-05-02 13:07:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:35,989 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-05-02 13:07:35,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:35,989 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-05-02 13:07:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-02 13:07:35,989 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:35,989 INFO L523 BasicCegarLoop]: trace histogram [28, 26, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:36,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 13:07:36,209 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:36,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1714085134, now seen corresponding path program 25 times [2021-05-02 13:07:36,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:36,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433522038] [2021-05-02 13:07:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 81 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 13:07:36,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:36,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433522038] [2021-05-02 13:07:36,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433522038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:36,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062880198] [2021-05-02 13:07:36,534 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 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 [2021-05-02 13:07:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:36,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 13:07:36,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:36,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 81 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 13:07:36,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062880198] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:36,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:36,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 13:07:36,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227007590] [2021-05-02 13:07:36,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 13:07:36,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:36,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 13:07:36,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 13:07:36,758 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:37,738 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-05-02 13:07:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 13:07:37,738 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2021-05-02 13:07:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:37,740 INFO L225 Difference]: With dead ends: 104 [2021-05-02 13:07:37,740 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 13:07:37,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1054.5ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 13:07:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 13:07:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 13:07:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 76 states have internal predecessors, (80), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-05-02 13:07:37,747 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 76 [2021-05-02 13:07:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:37,747 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-05-02 13:07:37,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-05-02 13:07:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 13:07:37,747 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:37,747 INFO L523 BasicCegarLoop]: trace histogram [29, 27, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:37,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:37,965 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -151169967, now seen corresponding path program 26 times [2021-05-02 13:07:37,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:37,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791151926] [2021-05-02 13:07:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 84 proven. 756 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 13:07:38,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:38,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791151926] [2021-05-02 13:07:38,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791151926] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:38,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228593340] [2021-05-02 13:07:38,310 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 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 [2021-05-02 13:07:38,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:07:38,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:38,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 13:07:38,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:38,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 84 proven. 756 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 13:07:38,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228593340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:38,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:38,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 13:07:38,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105795188] [2021-05-02 13:07:38,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 13:07:38,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:38,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 13:07:38,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-05-02 13:07:38,510 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 31 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:39,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:39,551 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2021-05-02 13:07:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 13:07:39,552 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 31 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2021-05-02 13:07:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:39,552 INFO L225 Difference]: With dead ends: 106 [2021-05-02 13:07:39,552 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 13:07:39,553 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1139.0ms TimeCoverageRelationStatistics Valid=1336, Invalid=2204, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 13:07:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 13:07:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 13:07:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 78 states have internal predecessors, (82), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-05-02 13:07:39,558 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 78 [2021-05-02 13:07:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:39,558 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-05-02 13:07:39,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 31 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-05-02 13:07:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-02 13:07:39,559 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:39,559 INFO L523 BasicCegarLoop]: trace histogram [30, 28, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:39,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 13:07:39,772 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1659959596, now seen corresponding path program 27 times [2021-05-02 13:07:39,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:39,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238269168] [2021-05-02 13:07:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 87 proven. 812 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 13:07:40,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:40,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238269168] [2021-05-02 13:07:40,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238269168] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:40,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29514245] [2021-05-02 13:07:40,160 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 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 [2021-05-02 13:07:40,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-05-02 13:07:40,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:40,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 13:07:40,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:40,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 88 proven. 36 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2021-05-02 13:07:40,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29514245] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:40,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:40,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 12] total 42 [2021-05-02 13:07:40,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929863448] [2021-05-02 13:07:40,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 13:07:40,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:40,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 13:07:40,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1190, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 13:07:40,469 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:42,246 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2021-05-02 13:07:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 13:07:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2021-05-02 13:07:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:42,249 INFO L225 Difference]: With dead ends: 115 [2021-05-02 13:07:42,249 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 13:07:42,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1935.7ms TimeCoverageRelationStatistics Valid=2054, Invalid=4426, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 13:07:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 13:07:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2021-05-02 13:07:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.0625) internal successors, (85), 81 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:42,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-05-02 13:07:42,267 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 80 [2021-05-02 13:07:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:42,268 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-05-02 13:07:42,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 41 states have internal predecessors, (86), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-05-02 13:07:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 13:07:42,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:42,269 INFO L523 BasicCegarLoop]: trace histogram [31, 29, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:42,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:42,476 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:42,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:42,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1403610580, now seen corresponding path program 28 times [2021-05-02 13:07:42,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:42,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505159368] [2021-05-02 13:07:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 90 proven. 870 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 13:07:42,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:42,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505159368] [2021-05-02 13:07:42,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505159368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:42,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5272712] [2021-05-02 13:07:42,873 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 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 [2021-05-02 13:07:42,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:07:42,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:42,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 13:07:42,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:42,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:42,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 90 proven. 870 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 13:07:43,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5272712] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:43,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:43,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 13:07:43,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721495400] [2021-05-02 13:07:43,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 13:07:43,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 13:07:43,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 13:07:43,094 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:44,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:44,159 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2021-05-02 13:07:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 13:07:44,159 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-02 13:07:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:44,160 INFO L225 Difference]: With dead ends: 112 [2021-05-02 13:07:44,160 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 13:07:44,161 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1287.2ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 13:07:44,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 13:07:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-05-02 13:07:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 83 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2021-05-02 13:07:44,166 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 83 [2021-05-02 13:07:44,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:44,166 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2021-05-02 13:07:44,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2021-05-02 13:07:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 13:07:44,167 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:44,167 INFO L523 BasicCegarLoop]: trace histogram [32, 30, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:44,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 13:07:44,384 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:44,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:44,384 INFO L82 PathProgramCache]: Analyzing trace with hash -955317879, now seen corresponding path program 29 times [2021-05-02 13:07:44,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:44,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642368742] [2021-05-02 13:07:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 13:07:44,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:44,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642368742] [2021-05-02 13:07:44,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642368742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:44,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945724476] [2021-05-02 13:07:44,760 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 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 [2021-05-02 13:07:44,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2021-05-02 13:07:44,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:44,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 13:07:44,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:44,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:44,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:45,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:45,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:45,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:45,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:45,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 13:07:45,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945724476] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:45,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:45,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35 [2021-05-02 13:07:45,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475412579] [2021-05-02 13:07:45,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 13:07:45,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:45,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 13:07:45,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 13:07:45,024 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:46,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:46,064 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2021-05-02 13:07:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 13:07:46,065 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 13:07:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:46,074 INFO L225 Difference]: With dead ends: 114 [2021-05-02 13:07:46,074 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 13:07:46,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1108.7ms TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 13:07:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 13:07:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-05-02 13:07:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 85 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-05-02 13:07:46,081 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 85 [2021-05-02 13:07:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:46,081 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-05-02 13:07:46,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-05-02 13:07:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 13:07:46,082 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:46,082 INFO L523 BasicCegarLoop]: trace histogram [33, 31, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:46,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:07:46,297 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:46,297 INFO L82 PathProgramCache]: Analyzing trace with hash 357238182, now seen corresponding path program 30 times [2021-05-02 13:07:46,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:46,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750062223] [2021-05-02 13:07:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 96 proven. 992 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 13:07:46,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:46,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750062223] [2021-05-02 13:07:46,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750062223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:46,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053966990] [2021-05-02 13:07:46,758 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 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 [2021-05-02 13:07:46,816 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-05-02 13:07:46,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 13:07:46,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:46,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:46,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:46,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:46,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:46,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 155 proven. 4 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 13:07:46,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053966990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:46,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:46,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 5] total 38 [2021-05-02 13:07:46,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113736335] [2021-05-02 13:07:46,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 13:07:46,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:46,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 13:07:46,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 13:07:46,991 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 37 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:48,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:48,465 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2021-05-02 13:07:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 13:07:48,465 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 37 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-02 13:07:48,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:48,466 INFO L225 Difference]: With dead ends: 119 [2021-05-02 13:07:48,466 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 13:07:48,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1771.3ms TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:07:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 13:07:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-05-02 13:07:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 89 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2021-05-02 13:07:48,479 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 87 [2021-05-02 13:07:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:48,479 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2021-05-02 13:07:48,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 37 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2021-05-02 13:07:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 13:07:48,480 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:48,480 INFO L523 BasicCegarLoop]: trace histogram [35, 32, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:48,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 13:07:48,699 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1643327266, now seen corresponding path program 31 times [2021-05-02 13:07:48,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:48,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810821255] [2021-05-02 13:07:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 165 proven. 1056 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 13:07:49,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:49,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810821255] [2021-05-02 13:07:49,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810821255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:49,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907653422] [2021-05-02 13:07:49,198 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 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 [2021-05-02 13:07:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:49,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 13:07:49,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:49,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 165 proven. 1056 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 13:07:49,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907653422] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:49,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:49,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 13:07:49,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606824344] [2021-05-02 13:07:49,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 13:07:49,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:49,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 13:07:49,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 13:07:49,454 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:50,925 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2021-05-02 13:07:50,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 13:07:50,926 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-02 13:07:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:50,927 INFO L225 Difference]: With dead ends: 122 [2021-05-02 13:07:50,927 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 13:07:50,928 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1641.6ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 13:07:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 13:07:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-05-02 13:07:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2021-05-02 13:07:50,934 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 91 [2021-05-02 13:07:50,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:50,934 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2021-05-02 13:07:50,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2021-05-02 13:07:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 13:07:50,935 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:50,935 INFO L523 BasicCegarLoop]: trace histogram [36, 33, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:51,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 13:07:51,157 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash -431322309, now seen corresponding path program 32 times [2021-05-02 13:07:51,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:51,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626191720] [2021-05-02 13:07:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 170 proven. 1122 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 13:07:51,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:51,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626191720] [2021-05-02 13:07:51,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626191720] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:51,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041255926] [2021-05-02 13:07:51,674 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 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 [2021-05-02 13:07:51,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:07:51,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:51,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 13:07:51,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:51,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 170 proven. 1122 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 13:07:51,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041255926] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:51,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:51,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 38 [2021-05-02 13:07:51,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730160557] [2021-05-02 13:07:51,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 13:07:51,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:51,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 13:07:51,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 13:07:51,930 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 37 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:53,468 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2021-05-02 13:07:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 13:07:53,469 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 37 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 13:07:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:53,469 INFO L225 Difference]: With dead ends: 124 [2021-05-02 13:07:53,469 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 13:07:53,470 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1746.7ms TimeCoverageRelationStatistics Valid=1927, Invalid=3185, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 13:07:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 13:07:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-05-02 13:07:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.065217391304348) internal successors, (98), 93 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2021-05-02 13:07:53,476 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 93 [2021-05-02 13:07:53,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:53,477 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2021-05-02 13:07:53,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 37 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:53,477 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2021-05-02 13:07:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 13:07:53,477 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:53,477 INFO L523 BasicCegarLoop]: trace histogram [37, 34, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:53,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 13:07:53,697 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash 369304152, now seen corresponding path program 33 times [2021-05-02 13:07:53,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:53,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583792807] [2021-05-02 13:07:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 175 proven. 1190 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 13:07:54,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:54,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583792807] [2021-05-02 13:07:54,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583792807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:54,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153785006] [2021-05-02 13:07:54,271 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 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 [2021-05-02 13:07:54,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 13:07:54,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:54,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 13:07:54,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:54,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 179 proven. 45 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2021-05-02 13:07:54,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153785006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:54,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:54,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 14] total 50 [2021-05-02 13:07:54,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536639060] [2021-05-02 13:07:54,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 13:07:54,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 13:07:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=1692, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 13:07:54,690 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:07:57,239 INFO L93 Difference]: Finished difference Result 139 states and 157 transitions. [2021-05-02 13:07:57,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 13:07:57,239 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-02 13:07:57,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:07:57,240 INFO L225 Difference]: With dead ends: 139 [2021-05-02 13:07:57,240 INFO L226 Difference]: Without dead ends: 114 [2021-05-02 13:07:57,241 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 2808.7ms TimeCoverageRelationStatistics Valid=2898, Invalid=6414, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 13:07:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-02 13:07:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-05-02 13:07:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 95 states have (on average 1.063157894736842) internal successors, (101), 96 states have internal predecessors, (101), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:07:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2021-05-02 13:07:57,248 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 95 [2021-05-02 13:07:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:07:57,248 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2021-05-02 13:07:57,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.02) internal successors, (101), 49 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:07:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2021-05-02 13:07:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-05-02 13:07:57,248 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:07:57,248 INFO L523 BasicCegarLoop]: trace histogram [38, 35, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:07:57,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 13:07:57,459 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:07:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:07:57,460 INFO L82 PathProgramCache]: Analyzing trace with hash 107646030, now seen corresponding path program 34 times [2021-05-02 13:07:57,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:07:57,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673501957] [2021-05-02 13:07:57,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:07:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:07:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:07:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 180 proven. 1260 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 13:07:58,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:07:58,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673501957] [2021-05-02 13:07:58,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673501957] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:58,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314049468] [2021-05-02 13:07:58,083 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 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 [2021-05-02 13:07:58,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:07:58,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:07:58,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 13:07:58,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:07:58,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:07:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 180 proven. 1260 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 13:07:58,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314049468] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:07:58,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:07:58,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 13:07:58,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348150229] [2021-05-02 13:07:58,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 13:07:58,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:07:58,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 13:07:58,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 13:07:58,378 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:00,041 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-05-02 13:08:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 13:08:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2021-05-02 13:08:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:00,042 INFO L225 Difference]: With dead ends: 130 [2021-05-02 13:08:00,042 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 13:08:00,043 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1944.8ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 13:08:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 13:08:00,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-02 13:08:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 97 states have (on average 1.0618556701030928) internal successors, (103), 98 states have internal predecessors, (103), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2021-05-02 13:08:00,049 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 98 [2021-05-02 13:08:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:00,050 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2021-05-02 13:08:00,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:00,050 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2021-05-02 13:08:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-05-02 13:08:00,050 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:00,050 INFO L523 BasicCegarLoop]: trace histogram [39, 36, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:00,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 13:08:00,269 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:00,270 INFO L82 PathProgramCache]: Analyzing trace with hash -957030575, now seen corresponding path program 35 times [2021-05-02 13:08:00,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:00,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048174207] [2021-05-02 13:08:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1576 backedges. 185 proven. 1332 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 13:08:00,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:00,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048174207] [2021-05-02 13:08:00,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048174207] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:00,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123392608] [2021-05-02 13:08:00,928 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 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 [2021-05-02 13:08:01,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-05-02 13:08:01,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:01,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 13:08:01,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:01,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1576 backedges. 185 proven. 1332 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 13:08:01,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123392608] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:01,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:01,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 41 [2021-05-02 13:08:01,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510196655] [2021-05-02 13:08:01,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 13:08:01,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:01,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 13:08:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 13:08:01,237 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:02,805 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2021-05-02 13:08:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 13:08:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2021-05-02 13:08:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:02,809 INFO L225 Difference]: With dead ends: 132 [2021-05-02 13:08:02,809 INFO L226 Difference]: Without dead ends: 106 [2021-05-02 13:08:02,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1978.9ms TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 13:08:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-02 13:08:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-02 13:08:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 99 states have (on average 1.0606060606060606) internal successors, (105), 100 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2021-05-02 13:08:02,820 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 100 [2021-05-02 13:08:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:02,821 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2021-05-02 13:08:02,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:02,825 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2021-05-02 13:08:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-05-02 13:08:02,825 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:02,825 INFO L523 BasicCegarLoop]: trace histogram [40, 37, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:03,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 13:08:03,038 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:03,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1909031532, now seen corresponding path program 36 times [2021-05-02 13:08:03,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:03,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505405248] [2021-05-02 13:08:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 190 proven. 1406 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 13:08:03,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:03,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505405248] [2021-05-02 13:08:03,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505405248] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:03,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590945573] [2021-05-02 13:08:03,877 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 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 [2021-05-02 13:08:03,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-05-02 13:08:03,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:03,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 13:08:03,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:04,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 194 proven. 55 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-05-02 13:08:04,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590945573] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:04,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:04,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 15] total 54 [2021-05-02 13:08:04,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97917347] [2021-05-02 13:08:04,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 13:08:04,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:04,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 13:08:04,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=1976, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 13:08:04,322 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:06,867 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2021-05-02 13:08:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 13:08:06,867 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2021-05-02 13:08:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:06,868 INFO L225 Difference]: With dead ends: 147 [2021-05-02 13:08:06,868 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 13:08:06,869 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 3294.7ms TimeCoverageRelationStatistics Valid=3412, Invalid=7508, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 13:08:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 13:08:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2021-05-02 13:08:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 103 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2021-05-02 13:08:06,878 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 102 [2021-05-02 13:08:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:06,878 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2021-05-02 13:08:06,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.0) internal successors, (108), 53 states have internal predecessors, (108), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2021-05-02 13:08:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 13:08:06,880 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:06,880 INFO L523 BasicCegarLoop]: trace histogram [41, 38, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:07,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-02 13:08:07,085 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash -407275604, now seen corresponding path program 37 times [2021-05-02 13:08:07,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:07,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160091412] [2021-05-02 13:08:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 195 proven. 1482 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-05-02 13:08:07,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:07,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160091412] [2021-05-02 13:08:07,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160091412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:07,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842400090] [2021-05-02 13:08:07,772 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 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 [2021-05-02 13:08:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:07,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 13:08:07,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:07,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 195 proven. 1482 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-05-02 13:08:08,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842400090] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:08,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:08,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 13:08:08,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897270756] [2021-05-02 13:08:08,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 13:08:08,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:08,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 13:08:08,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 13:08:08,069 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:09,711 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2021-05-02 13:08:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 13:08:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 13:08:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:09,712 INFO L225 Difference]: With dead ends: 138 [2021-05-02 13:08:09,713 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 13:08:09,713 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2006.1ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 13:08:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 13:08:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-05-02 13:08:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 104 states have (on average 1.0576923076923077) internal successors, (110), 105 states have internal predecessors, (110), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2021-05-02 13:08:09,739 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 105 [2021-05-02 13:08:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:09,739 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2021-05-02 13:08:09,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2021-05-02 13:08:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 13:08:09,753 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:09,753 INFO L523 BasicCegarLoop]: trace histogram [42, 39, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:09,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:09,969 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1860220087, now seen corresponding path program 38 times [2021-05-02 13:08:09,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:09,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957192554] [2021-05-02 13:08:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:11,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 200 proven. 1560 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-05-02 13:08:11,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:11,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957192554] [2021-05-02 13:08:11,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957192554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:11,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429245384] [2021-05-02 13:08:11,040 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 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 [2021-05-02 13:08:11,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:08:11,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:11,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 41 conjunts are in the unsatisfiable core [2021-05-02 13:08:11,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:11,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 200 proven. 1560 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-05-02 13:08:11,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429245384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:11,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:11,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 13:08:11,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843460552] [2021-05-02 13:08:11,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 13:08:11,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:11,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 13:08:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 13:08:11,321 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:12,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:12,754 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2021-05-02 13:08:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 13:08:12,755 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-02 13:08:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:12,756 INFO L225 Difference]: With dead ends: 140 [2021-05-02 13:08:12,756 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 13:08:12,757 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 2199.5ms TimeCoverageRelationStatistics Valid=2626, Invalid=4346, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 13:08:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 13:08:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-05-02 13:08:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 106 states have (on average 1.0566037735849056) internal successors, (112), 107 states have internal predecessors, (112), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2021-05-02 13:08:12,764 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 107 [2021-05-02 13:08:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:12,765 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2021-05-02 13:08:12,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.159090909090909) internal successors, (95), 43 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2021-05-02 13:08:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 13:08:12,765 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:12,765 INFO L523 BasicCegarLoop]: trace histogram [43, 40, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:12,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:12,981 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:12,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2019470246, now seen corresponding path program 39 times [2021-05-02 13:08:12,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:12,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168343854] [2021-05-02 13:08:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1915 backedges. 205 proven. 1640 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-05-02 13:08:13,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:13,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168343854] [2021-05-02 13:08:13,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168343854] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:13,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830706438] [2021-05-02 13:08:13,739 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 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 [2021-05-02 13:08:13,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-05-02 13:08:13,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:13,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 13:08:13,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1915 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-05-02 13:08:14,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830706438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:14,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:14,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 16] total 58 [2021-05-02 13:08:14,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907984816] [2021-05-02 13:08:14,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 13:08:14,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:14,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 13:08:14,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1024, Invalid=2282, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 13:08:14,240 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:17,111 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2021-05-02 13:08:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 13:08:17,111 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 13:08:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:17,112 INFO L225 Difference]: With dead ends: 155 [2021-05-02 13:08:17,112 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 13:08:17,113 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2284 ImplicationChecksByTransitivity, 3572.4ms TimeCoverageRelationStatistics Valid=3968, Invalid=8688, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 13:08:17,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 13:08:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2021-05-02 13:08:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 109 states have (on average 1.055045871559633) internal successors, (115), 110 states have internal predecessors, (115), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-05-02 13:08:17,121 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 109 [2021-05-02 13:08:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:17,121 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-05-02 13:08:17,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-05-02 13:08:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-05-02 13:08:17,122 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:17,122 INFO L523 BasicCegarLoop]: trace histogram [44, 41, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:17,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:17,340 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:17,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:17,340 INFO L82 PathProgramCache]: Analyzing trace with hash 498457472, now seen corresponding path program 40 times [2021-05-02 13:08:17,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:17,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243602715] [2021-05-02 13:08:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2014 backedges. 210 proven. 1722 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 13:08:18,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:18,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243602715] [2021-05-02 13:08:18,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243602715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:18,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126246570] [2021-05-02 13:08:18,063 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 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 [2021-05-02 13:08:18,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:08:18,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:18,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 13:08:18,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:18,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2014 backedges. 210 proven. 1722 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 13:08:18,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126246570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:18,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:18,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 13:08:18,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209446017] [2021-05-02 13:08:18,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 13:08:18,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:18,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 13:08:18,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 13:08:18,319 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:19,877 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2021-05-02 13:08:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 13:08:19,880 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2021-05-02 13:08:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:19,881 INFO L225 Difference]: With dead ends: 146 [2021-05-02 13:08:19,881 INFO L226 Difference]: Without dead ends: 118 [2021-05-02 13:08:19,882 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1926.9ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 13:08:19,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-02 13:08:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-05-02 13:08:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 111 states have (on average 1.054054054054054) internal successors, (117), 112 states have internal predecessors, (117), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-05-02 13:08:19,897 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 112 [2021-05-02 13:08:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:19,897 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-05-02 13:08:19,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-05-02 13:08:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-05-02 13:08:19,898 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:19,898 INFO L523 BasicCegarLoop]: trace histogram [45, 42, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:20,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 13:08:20,109 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:20,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1438985539, now seen corresponding path program 41 times [2021-05-02 13:08:20,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:20,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957323489] [2021-05-02 13:08:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2103 backedges. 215 proven. 1806 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 13:08:20,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:20,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957323489] [2021-05-02 13:08:20,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957323489] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:20,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414733298] [2021-05-02 13:08:20,786 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 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 [2021-05-02 13:08:20,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-05-02 13:08:20,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:20,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 13:08:20,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:20,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:20,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2103 backedges. 215 proven. 1806 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 13:08:21,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414733298] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:21,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:21,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 47 [2021-05-02 13:08:21,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790508647] [2021-05-02 13:08:21,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 13:08:21,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:21,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 13:08:21,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 13:08:21,056 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:22,374 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2021-05-02 13:08:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 13:08:22,375 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2021-05-02 13:08:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:22,376 INFO L225 Difference]: With dead ends: 148 [2021-05-02 13:08:22,376 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 13:08:22,377 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 1735.9ms TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 13:08:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 13:08:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 13:08:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 113 states have (on average 1.0530973451327434) internal successors, (119), 114 states have internal predecessors, (119), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2021-05-02 13:08:22,386 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 114 [2021-05-02 13:08:22,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:22,387 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2021-05-02 13:08:22,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:22,387 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2021-05-02 13:08:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-05-02 13:08:22,387 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:22,387 INFO L523 BasicCegarLoop]: trace histogram [46, 43, 12, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:22,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:22,609 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:22,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:22,610 INFO L82 PathProgramCache]: Analyzing trace with hash -951641530, now seen corresponding path program 42 times [2021-05-02 13:08:22,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:22,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222226296] [2021-05-02 13:08:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 220 proven. 1892 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 13:08:23,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:23,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222226296] [2021-05-02 13:08:23,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222226296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:23,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266339859] [2021-05-02 13:08:23,390 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 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 [2021-05-02 13:08:23,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 13:08:23,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:23,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 13:08:23,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:23,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2194 backedges. 224 proven. 78 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2021-05-02 13:08:23,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266339859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:23,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:23,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 17] total 62 [2021-05-02 13:08:23,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910934432] [2021-05-02 13:08:23,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 13:08:23,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 13:08:23,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1172, Invalid=2610, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 13:08:23,989 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 62 states, 62 states have (on average 1.967741935483871) internal successors, (122), 61 states have internal predecessors, (122), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:27,285 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2021-05-02 13:08:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 13:08:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.967741935483871) internal successors, (122), 61 states have internal predecessors, (122), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2021-05-02 13:08:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:27,286 INFO L225 Difference]: With dead ends: 163 [2021-05-02 13:08:27,286 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 13:08:27,288 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2616 ImplicationChecksByTransitivity, 3771.2ms TimeCoverageRelationStatistics Valid=4566, Invalid=9954, Unknown=0, NotChecked=0, Total=14520 [2021-05-02 13:08:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 13:08:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2021-05-02 13:08:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 116 states have (on average 1.0517241379310345) internal successors, (122), 117 states have internal predecessors, (122), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2021-05-02 13:08:27,297 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 116 [2021-05-02 13:08:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:27,298 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2021-05-02 13:08:27,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.967741935483871) internal successors, (122), 61 states have internal predecessors, (122), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2021-05-02 13:08:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 13:08:27,298 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:27,299 INFO L523 BasicCegarLoop]: trace histogram [47, 44, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:27,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:27,502 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:27,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:27,503 INFO L82 PathProgramCache]: Analyzing trace with hash 575187578, now seen corresponding path program 43 times [2021-05-02 13:08:27,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:27,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822629173] [2021-05-02 13:08:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 225 proven. 1980 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-05-02 13:08:28,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:28,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822629173] [2021-05-02 13:08:28,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822629173] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:28,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669145581] [2021-05-02 13:08:28,287 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 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 [2021-05-02 13:08:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:28,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 13:08:28,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:28,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2300 backedges. 225 proven. 1980 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-05-02 13:08:28,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669145581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:28,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:28,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 13:08:28,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625507139] [2021-05-02 13:08:28,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 13:08:28,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:28,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 13:08:28,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 13:08:28,573 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:29,981 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2021-05-02 13:08:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 13:08:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-02 13:08:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:29,984 INFO L225 Difference]: With dead ends: 154 [2021-05-02 13:08:29,984 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 13:08:29,985 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 1982.6ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 13:08:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 13:08:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-05-02 13:08:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 118 states have (on average 1.0508474576271187) internal successors, (124), 119 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2021-05-02 13:08:29,995 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 119 [2021-05-02 13:08:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:29,995 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2021-05-02 13:08:29,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2021-05-02 13:08:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 13:08:30,006 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:30,006 INFO L523 BasicCegarLoop]: trace histogram [48, 45, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:30,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 13:08:30,224 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:30,224 INFO L82 PathProgramCache]: Analyzing trace with hash -351180969, now seen corresponding path program 44 times [2021-05-02 13:08:30,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:30,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003638541] [2021-05-02 13:08:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:30,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 230 proven. 2070 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-05-02 13:08:30,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:30,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003638541] [2021-05-02 13:08:30,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003638541] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:30,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39392883] [2021-05-02 13:08:30,940 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 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 [2021-05-02 13:08:31,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:08:31,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:31,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 13:08:31,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:31,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 230 proven. 2070 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-05-02 13:08:31,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39392883] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:31,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:31,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 13:08:31,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335711098] [2021-05-02 13:08:31,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 13:08:31,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:31,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 13:08:31,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 13:08:31,308 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand has 50 states, 50 states have (on average 2.14) internal successors, (107), 49 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:33,214 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2021-05-02 13:08:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 13:08:33,214 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 49 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-02 13:08:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:33,215 INFO L225 Difference]: With dead ends: 156 [2021-05-02 13:08:33,215 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 13:08:33,218 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 2336.2ms TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 13:08:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 13:08:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-05-02 13:08:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 120 states have (on average 1.05) internal successors, (126), 121 states have internal predecessors, (126), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2021-05-02 13:08:33,249 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 121 [2021-05-02 13:08:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:33,249 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2021-05-02 13:08:33,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 49 states have internal predecessors, (107), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2021-05-02 13:08:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 13:08:33,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:33,250 INFO L523 BasicCegarLoop]: trace histogram [49, 46, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:33,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 13:08:33,473 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:33,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1533124364, now seen corresponding path program 45 times [2021-05-02 13:08:33,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:33,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698590863] [2021-05-02 13:08:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 235 proven. 2162 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-05-02 13:08:34,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:34,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698590863] [2021-05-02 13:08:34,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698590863] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:34,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912936109] [2021-05-02 13:08:34,649 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 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 [2021-05-02 13:08:34,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-05-02 13:08:34,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:34,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 13:08:34,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:34,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 322 proven. 9 refuted. 0 times theorem prover too weak. 2161 trivial. 0 not checked. [2021-05-02 13:08:34,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912936109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:34,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:34,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 6] total 54 [2021-05-02 13:08:34,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521896752] [2021-05-02 13:08:34,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 13:08:34,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:34,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 13:08:34,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 13:08:34,986 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:37,571 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2021-05-02 13:08:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 13:08:37,571 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-02 13:08:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:37,572 INFO L225 Difference]: With dead ends: 161 [2021-05-02 13:08:37,572 INFO L226 Difference]: Without dead ends: 132 [2021-05-02 13:08:37,573 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 3496.2ms TimeCoverageRelationStatistics Valid=4134, Invalid=6786, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 13:08:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-02 13:08:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-05-02 13:08:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 124 states have (on average 1.0564516129032258) internal successors, (131), 125 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2021-05-02 13:08:37,582 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 123 [2021-05-02 13:08:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:37,583 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2021-05-02 13:08:37,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 53 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2021-05-02 13:08:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 13:08:37,583 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:37,583 INFO L523 BasicCegarLoop]: trace histogram [51, 47, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:37,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 13:08:37,797 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash 59961516, now seen corresponding path program 46 times [2021-05-02 13:08:37,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:37,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736999698] [2021-05-02 13:08:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:38,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 336 proven. 2256 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 13:08:38,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:38,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736999698] [2021-05-02 13:08:38,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736999698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:38,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803408443] [2021-05-02 13:08:38,883 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 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 [2021-05-02 13:08:38,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:08:38,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:38,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 13:08:38,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:38,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:38,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 336 proven. 2256 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 13:08:39,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803408443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:39,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:39,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 13:08:39,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030246] [2021-05-02 13:08:39,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 13:08:39,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 13:08:39,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 13:08:39,195 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:41,537 INFO L93 Difference]: Finished difference Result 164 states and 177 transitions. [2021-05-02 13:08:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 13:08:41,538 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-02 13:08:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:41,539 INFO L225 Difference]: With dead ends: 164 [2021-05-02 13:08:41,539 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 13:08:41,540 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 3155.2ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 13:08:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 13:08:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-05-02 13:08:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 126 states have (on average 1.0555555555555556) internal successors, (133), 127 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 139 transitions. [2021-05-02 13:08:41,549 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 139 transitions. Word has length 127 [2021-05-02 13:08:41,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:41,550 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 139 transitions. [2021-05-02 13:08:41,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:41,550 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 139 transitions. [2021-05-02 13:08:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 13:08:41,550 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:41,550 INFO L523 BasicCegarLoop]: trace histogram [52, 48, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:41,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:41,764 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:41,765 INFO L82 PathProgramCache]: Analyzing trace with hash -990674807, now seen corresponding path program 47 times [2021-05-02 13:08:41,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:41,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287932775] [2021-05-02 13:08:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:42,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 343 proven. 2352 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 13:08:42,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:42,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287932775] [2021-05-02 13:08:42,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287932775] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:42,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730020865] [2021-05-02 13:08:42,768 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 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 [2021-05-02 13:08:42,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2021-05-02 13:08:42,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:42,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 13:08:42,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:42,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:42,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2795 backedges. 343 proven. 2352 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 13:08:43,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730020865] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:43,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:43,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 53 [2021-05-02 13:08:43,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916807522] [2021-05-02 13:08:43,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 13:08:43,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:43,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 13:08:43,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 13:08:43,131 INFO L87 Difference]: Start difference. First operand 133 states and 139 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 52 states have internal predecessors, (113), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:45,811 INFO L93 Difference]: Finished difference Result 166 states and 179 transitions. [2021-05-02 13:08:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 13:08:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 52 states have internal predecessors, (113), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-02 13:08:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:45,813 INFO L225 Difference]: With dead ends: 166 [2021-05-02 13:08:45,813 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 13:08:45,814 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 3166.9ms TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 13:08:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 13:08:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-05-02 13:08:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 128 states have (on average 1.0546875) internal successors, (135), 129 states have internal predecessors, (135), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 141 transitions. [2021-05-02 13:08:45,823 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 141 transitions. Word has length 129 [2021-05-02 13:08:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:45,823 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 141 transitions. [2021-05-02 13:08:45,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 52 states have internal predecessors, (113), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 141 transitions. [2021-05-02 13:08:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 13:08:45,824 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:45,824 INFO L523 BasicCegarLoop]: trace histogram [53, 49, 13, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:46,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:46,028 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:46,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1334866650, now seen corresponding path program 48 times [2021-05-02 13:08:46,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:46,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363841653] [2021-05-02 13:08:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 350 proven. 2450 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 13:08:47,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:47,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363841653] [2021-05-02 13:08:47,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363841653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:47,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724503599] [2021-05-02 13:08:47,165 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 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 [2021-05-02 13:08:47,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 13:08:47,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:47,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 13:08:47,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:47,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 359 proven. 91 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-05-02 13:08:47,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724503599] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:47,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:47,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 18] total 69 [2021-05-02 13:08:47,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63825680] [2021-05-02 13:08:47,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 13:08:47,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:47,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 13:08:47,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1480, Invalid=3212, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 13:08:47,852 INFO L87 Difference]: Start difference. First operand 135 states and 141 transitions. Second operand has 69 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:51,793 INFO L93 Difference]: Finished difference Result 189 states and 213 transitions. [2021-05-02 13:08:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 13:08:51,794 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-05-02 13:08:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:51,795 INFO L225 Difference]: With dead ends: 189 [2021-05-02 13:08:51,795 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 13:08:51,796 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3300 ImplicationChecksByTransitivity, 4946.0ms TimeCoverageRelationStatistics Valid=5634, Invalid=12456, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 13:08:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 13:08:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 138. [2021-05-02 13:08:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 131 states have (on average 1.0534351145038168) internal successors, (138), 132 states have internal predecessors, (138), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2021-05-02 13:08:51,805 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 131 [2021-05-02 13:08:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:51,805 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 144 transitions. [2021-05-02 13:08:51,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 144 transitions. [2021-05-02 13:08:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-05-02 13:08:51,806 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:51,806 INFO L523 BasicCegarLoop]: trace histogram [54, 50, 14, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:52,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 13:08:52,007 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:52,007 INFO L82 PathProgramCache]: Analyzing trace with hash -128838208, now seen corresponding path program 49 times [2021-05-02 13:08:52,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:52,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127746959] [2021-05-02 13:08:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:53,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3021 backedges. 357 proven. 2550 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-05-02 13:08:53,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:53,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127746959] [2021-05-02 13:08:53,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127746959] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:53,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906897252] [2021-05-02 13:08:53,233 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 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 [2021-05-02 13:08:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:53,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 13:08:53,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:53,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3021 backedges. 357 proven. 2550 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-05-02 13:08:53,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906897252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:53,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:53,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 13:08:53,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370744143] [2021-05-02 13:08:53,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 13:08:53,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:53,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 13:08:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 13:08:53,557 INFO L87 Difference]: Start difference. First operand 138 states and 144 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:08:56,331 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2021-05-02 13:08:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 13:08:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2021-05-02 13:08:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:08:56,333 INFO L225 Difference]: With dead ends: 172 [2021-05-02 13:08:56,333 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 13:08:56,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 3514.9ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 13:08:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 13:08:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-05-02 13:08:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 133 states have (on average 1.0526315789473684) internal successors, (140), 134 states have internal predecessors, (140), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:08:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 146 transitions. [2021-05-02 13:08:56,344 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 146 transitions. Word has length 134 [2021-05-02 13:08:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:08:56,345 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 146 transitions. [2021-05-02 13:08:56,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:08:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 146 transitions. [2021-05-02 13:08:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-05-02 13:08:56,345 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:08:56,346 INFO L523 BasicCegarLoop]: trace histogram [55, 51, 14, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:08:56,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:08:56,567 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:08:56,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:08:56,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1617322819, now seen corresponding path program 50 times [2021-05-02 13:08:56,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:08:56,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403676179] [2021-05-02 13:08:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:08:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:08:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:08:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3130 backedges. 364 proven. 2652 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-05-02 13:08:57,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:08:57,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403676179] [2021-05-02 13:08:57,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403676179] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:57,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780197607] [2021-05-02 13:08:57,882 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 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 [2021-05-02 13:08:57,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:08:57,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:08:57,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 13:08:57,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:08:58,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:08:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3130 backedges. 364 proven. 2652 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-05-02 13:08:58,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780197607] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:08:58,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:08:58,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 13:08:58,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400547588] [2021-05-02 13:08:58,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 13:08:58,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:08:58,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 13:08:58,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 13:08:58,301 INFO L87 Difference]: Start difference. First operand 140 states and 146 transitions. Second operand has 56 states, 56 states have (on average 2.125) internal successors, (119), 55 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:00,669 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2021-05-02 13:09:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 13:09:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.125) internal successors, (119), 55 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2021-05-02 13:09:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:00,670 INFO L225 Difference]: With dead ends: 174 [2021-05-02 13:09:00,670 INFO L226 Difference]: Without dead ends: 142 [2021-05-02 13:09:00,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 3309.7ms TimeCoverageRelationStatistics Valid=4348, Invalid=7208, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 13:09:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-02 13:09:00,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-05-02 13:09:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 135 states have (on average 1.0518518518518518) internal successors, (142), 136 states have internal predecessors, (142), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 148 transitions. [2021-05-02 13:09:00,681 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 148 transitions. Word has length 136 [2021-05-02 13:09:00,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:00,681 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 148 transitions. [2021-05-02 13:09:00,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.125) internal successors, (119), 55 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 148 transitions. [2021-05-02 13:09:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 13:09:00,682 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:00,682 INFO L523 BasicCegarLoop]: trace histogram [56, 52, 14, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:00,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 13:09:00,884 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:00,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash 345857030, now seen corresponding path program 51 times [2021-05-02 13:09:00,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:00,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284610384] [2021-05-02 13:09:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:02,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3241 backedges. 371 proven. 2756 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-05-02 13:09:02,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:02,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284610384] [2021-05-02 13:09:02,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284610384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:02,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994238355] [2021-05-02 13:09:02,278 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 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 [2021-05-02 13:09:02,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-05-02 13:09:02,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:02,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 13:09:02,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:02,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:02,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3241 backedges. 380 proven. 105 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2021-05-02 13:09:03,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994238355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:03,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:03,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 19] total 73 [2021-05-02 13:09:03,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265397807] [2021-05-02 13:09:03,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 13:09:03,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:03,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 13:09:03,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=3599, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:09:03,008 INFO L87 Difference]: Start difference. First operand 142 states and 148 transitions. Second operand has 73 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 72 states have internal predecessors, (144), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:07,592 INFO L93 Difference]: Finished difference Result 197 states and 221 transitions. [2021-05-02 13:09:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 13:09:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 72 states have internal predecessors, (144), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2021-05-02 13:09:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:07,594 INFO L225 Difference]: With dead ends: 197 [2021-05-02 13:09:07,594 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 13:09:07,595 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 5658.1ms TimeCoverageRelationStatistics Valid=6343, Invalid=13963, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 13:09:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 13:09:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 145. [2021-05-02 13:09:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 138 states have (on average 1.0507246376811594) internal successors, (145), 139 states have internal predecessors, (145), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 151 transitions. [2021-05-02 13:09:07,606 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 151 transitions. Word has length 138 [2021-05-02 13:09:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:07,606 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 151 transitions. [2021-05-02 13:09:07,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 72 states have internal predecessors, (144), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 151 transitions. [2021-05-02 13:09:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 13:09:07,607 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:07,607 INFO L523 BasicCegarLoop]: trace histogram [57, 53, 15, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:07,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 13:09:07,808 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1245510906, now seen corresponding path program 52 times [2021-05-02 13:09:07,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:07,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260868741] [2021-05-02 13:09:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3369 backedges. 378 proven. 2862 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-05-02 13:09:09,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:09,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260868741] [2021-05-02 13:09:09,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260868741] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:09,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118558817] [2021-05-02 13:09:09,268 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 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 [2021-05-02 13:09:09,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:09:09,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:09,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 13:09:09,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:09,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3369 backedges. 378 proven. 2862 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-05-02 13:09:09,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118558817] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:09,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:09,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 13:09:09,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400554393] [2021-05-02 13:09:09,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 13:09:09,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:09,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 13:09:09,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 13:09:09,607 INFO L87 Difference]: Start difference. First operand 145 states and 151 transitions. Second operand has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:12,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:12,464 INFO L93 Difference]: Finished difference Result 180 states and 193 transitions. [2021-05-02 13:09:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 13:09:12,464 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-02 13:09:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:12,488 INFO L225 Difference]: With dead ends: 180 [2021-05-02 13:09:12,489 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 13:09:12,490 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3828.2ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 13:09:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 13:09:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-05-02 13:09:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 140 states have (on average 1.05) internal successors, (147), 141 states have internal predecessors, (147), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2021-05-02 13:09:12,506 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 141 [2021-05-02 13:09:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:12,506 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2021-05-02 13:09:12,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2021-05-02 13:09:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 13:09:12,507 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:12,507 INFO L523 BasicCegarLoop]: trace histogram [58, 54, 15, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:12,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 13:09:12,726 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:12,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1180829207, now seen corresponding path program 53 times [2021-05-02 13:09:12,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:12,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169180323] [2021-05-02 13:09:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3484 backedges. 385 proven. 2970 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-05-02 13:09:14,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:14,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169180323] [2021-05-02 13:09:14,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169180323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:14,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857587570] [2021-05-02 13:09:14,289 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 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 [2021-05-02 13:09:14,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 59 check-sat command(s) [2021-05-02 13:09:14,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:14,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 13:09:14,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:14,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3484 backedges. 385 proven. 2970 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-05-02 13:09:14,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857587570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:14,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:14,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 59 [2021-05-02 13:09:14,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049296613] [2021-05-02 13:09:14,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 13:09:14,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 13:09:14,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 13:09:14,687 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:17,786 INFO L93 Difference]: Finished difference Result 182 states and 195 transitions. [2021-05-02 13:09:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 13:09:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-02 13:09:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:17,787 INFO L225 Difference]: With dead ends: 182 [2021-05-02 13:09:17,788 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 13:09:17,789 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 4204.7ms TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 13:09:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 13:09:17,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-05-02 13:09:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 142 states have (on average 1.0492957746478873) internal successors, (149), 143 states have internal predecessors, (149), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2021-05-02 13:09:17,801 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 143 [2021-05-02 13:09:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:17,801 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2021-05-02 13:09:17,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:17,801 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2021-05-02 13:09:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 13:09:17,802 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:17,802 INFO L523 BasicCegarLoop]: trace histogram [59, 55, 15, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:18,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 13:09:18,025 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:18,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:18,025 INFO L82 PathProgramCache]: Analyzing trace with hash -848741388, now seen corresponding path program 54 times [2021-05-02 13:09:18,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:18,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202916395] [2021-05-02 13:09:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:19,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 392 proven. 3080 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-05-02 13:09:19,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:19,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202916395] [2021-05-02 13:09:19,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202916395] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:19,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139268032] [2021-05-02 13:09:19,617 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 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 [2021-05-02 13:09:19,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-05-02 13:09:19,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:19,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 13:09:19,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:19,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:19,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 401 proven. 120 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2021-05-02 13:09:20,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139268032] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:20,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:20,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 20] total 77 [2021-05-02 13:09:20,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342618620] [2021-05-02 13:09:20,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 13:09:20,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:20,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 13:09:20,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1844, Invalid=4008, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 13:09:20,468 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 77 states, 77 states have (on average 1.9610389610389611) internal successors, (151), 76 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:25,157 INFO L93 Difference]: Finished difference Result 205 states and 229 transitions. [2021-05-02 13:09:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 13:09:25,158 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.9610389610389611) internal successors, (151), 76 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-02 13:09:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:25,159 INFO L225 Difference]: With dead ends: 205 [2021-05-02 13:09:25,159 INFO L226 Difference]: Without dead ends: 172 [2021-05-02 13:09:25,160 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4118 ImplicationChecksByTransitivity, 5967.4ms TimeCoverageRelationStatistics Valid=7094, Invalid=15556, Unknown=0, NotChecked=0, Total=22650 [2021-05-02 13:09:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-05-02 13:09:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 152. [2021-05-02 13:09:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 145 states have (on average 1.0482758620689656) internal successors, (152), 146 states have internal predecessors, (152), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2021-05-02 13:09:25,172 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 145 [2021-05-02 13:09:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:25,172 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2021-05-02 13:09:25,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 1.9610389610389611) internal successors, (151), 76 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2021-05-02 13:09:25,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-05-02 13:09:25,173 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:25,173 INFO L523 BasicCegarLoop]: trace histogram [60, 56, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:25,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:09:25,394 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1105432434, now seen corresponding path program 55 times [2021-05-02 13:09:25,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:25,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480933982] [2021-05-02 13:09:25,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 399 proven. 3192 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 13:09:26,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:26,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480933982] [2021-05-02 13:09:26,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480933982] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:26,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062672099] [2021-05-02 13:09:26,451 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 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 [2021-05-02 13:09:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:26,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 13:09:26,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:26,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 399 proven. 3192 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 13:09:26,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062672099] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:26,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:26,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 13:09:26,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132698332] [2021-05-02 13:09:26,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 13:09:26,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:26,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 13:09:26,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 13:09:26,793 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:29,269 INFO L93 Difference]: Finished difference Result 188 states and 201 transitions. [2021-05-02 13:09:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 13:09:29,276 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2021-05-02 13:09:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:29,277 INFO L225 Difference]: With dead ends: 188 [2021-05-02 13:09:29,277 INFO L226 Difference]: Without dead ends: 154 [2021-05-02 13:09:29,278 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3054.9ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 13:09:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-02 13:09:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-02 13:09:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 147 states have (on average 1.0476190476190477) internal successors, (154), 148 states have internal predecessors, (154), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 160 transitions. [2021-05-02 13:09:29,290 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 160 transitions. Word has length 148 [2021-05-02 13:09:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:29,291 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 160 transitions. [2021-05-02 13:09:29,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:29,291 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 160 transitions. [2021-05-02 13:09:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-05-02 13:09:29,292 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:29,292 INFO L523 BasicCegarLoop]: trace histogram [61, 57, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:29,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 13:09:29,513 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:29,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:29,513 INFO L82 PathProgramCache]: Analyzing trace with hash -248218699, now seen corresponding path program 56 times [2021-05-02 13:09:29,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:29,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251846684] [2021-05-02 13:09:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 406 proven. 3306 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 13:09:31,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:31,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251846684] [2021-05-02 13:09:31,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251846684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:31,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351432097] [2021-05-02 13:09:31,146 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 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 [2021-05-02 13:09:31,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:09:31,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:31,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 59 conjunts are in the unsatisfiable core [2021-05-02 13:09:31,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:31,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 406 proven. 3306 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 13:09:31,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351432097] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:31,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:31,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 62 [2021-05-02 13:09:31,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090591227] [2021-05-02 13:09:31,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 13:09:31,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:31,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 13:09:31,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 13:09:31,534 INFO L87 Difference]: Start difference. First operand 154 states and 160 transitions. Second operand has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 61 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:34,854 INFO L93 Difference]: Finished difference Result 190 states and 203 transitions. [2021-05-02 13:09:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 13:09:34,854 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 61 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2021-05-02 13:09:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:34,855 INFO L225 Difference]: With dead ends: 190 [2021-05-02 13:09:34,856 INFO L226 Difference]: Without dead ends: 156 [2021-05-02 13:09:34,857 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 4343.6ms TimeCoverageRelationStatistics Valid=5371, Invalid=8909, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 13:09:34,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-05-02 13:09:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-05-02 13:09:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.0469798657718121) internal successors, (156), 150 states have internal predecessors, (156), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 162 transitions. [2021-05-02 13:09:34,869 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 162 transitions. Word has length 150 [2021-05-02 13:09:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:34,870 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 162 transitions. [2021-05-02 13:09:34,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 61 states have internal predecessors, (131), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 162 transitions. [2021-05-02 13:09:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-05-02 13:09:34,871 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:34,871 INFO L523 BasicCegarLoop]: trace histogram [62, 58, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:35,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:09:35,094 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:35,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:35,094 INFO L82 PathProgramCache]: Analyzing trace with hash 268133176, now seen corresponding path program 57 times [2021-05-02 13:09:35,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:35,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327935980] [2021-05-02 13:09:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 413 proven. 3422 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 13:09:36,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:36,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327935980] [2021-05-02 13:09:36,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327935980] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:36,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392816661] [2021-05-02 13:09:36,797 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 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 [2021-05-02 13:09:36,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-05-02 13:09:36,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:36,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 13:09:36,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:37,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 422 proven. 136 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2021-05-02 13:09:37,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392816661] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:37,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:37,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 21] total 81 [2021-05-02 13:09:37,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428972233] [2021-05-02 13:09:37,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 13:09:37,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 13:09:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2041, Invalid=4439, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 13:09:37,702 INFO L87 Difference]: Start difference. First operand 156 states and 162 transitions. Second operand has 81 states, 81 states have (on average 1.9506172839506173) internal successors, (158), 80 states have internal predecessors, (158), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:43,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:43,289 INFO L93 Difference]: Finished difference Result 213 states and 237 transitions. [2021-05-02 13:09:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 13:09:43,290 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.9506172839506173) internal successors, (158), 80 states have internal predecessors, (158), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 152 [2021-05-02 13:09:43,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:43,291 INFO L225 Difference]: With dead ends: 213 [2021-05-02 13:09:43,292 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 13:09:43,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4560 ImplicationChecksByTransitivity, 7068.3ms TimeCoverageRelationStatistics Valid=7887, Invalid=17235, Unknown=0, NotChecked=0, Total=25122 [2021-05-02 13:09:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 13:09:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 159. [2021-05-02 13:09:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 152 states have (on average 1.0460526315789473) internal successors, (159), 153 states have internal predecessors, (159), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2021-05-02 13:09:43,307 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 152 [2021-05-02 13:09:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:43,307 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2021-05-02 13:09:43,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 1.9506172839506173) internal successors, (158), 80 states have internal predecessors, (158), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2021-05-02 13:09:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 13:09:43,308 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:43,308 INFO L523 BasicCegarLoop]: trace histogram [63, 59, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:43,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-02 13:09:43,529 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:43,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2117629256, now seen corresponding path program 58 times [2021-05-02 13:09:43,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:43,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320748226] [2021-05-02 13:09:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:45,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4122 backedges. 420 proven. 3540 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-05-02 13:09:45,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:45,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320748226] [2021-05-02 13:09:45,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320748226] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:45,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204623391] [2021-05-02 13:09:45,238 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 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 [2021-05-02 13:09:45,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:09:45,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:45,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 13:09:45,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:45,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4122 backedges. 420 proven. 3540 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-05-02 13:09:45,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204623391] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:45,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:45,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 13:09:45,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506092664] [2021-05-02 13:09:45,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 13:09:45,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 13:09:45,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 13:09:45,647 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:49,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:49,245 INFO L93 Difference]: Finished difference Result 196 states and 209 transitions. [2021-05-02 13:09:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 13:09:49,246 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-05-02 13:09:49,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:49,248 INFO L225 Difference]: With dead ends: 196 [2021-05-02 13:09:49,248 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 13:09:49,250 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 4648.1ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 13:09:49,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 13:09:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-05-02 13:09:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 154 states have (on average 1.0454545454545454) internal successors, (161), 155 states have internal predecessors, (161), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2021-05-02 13:09:49,265 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 155 [2021-05-02 13:09:49,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:49,265 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2021-05-02 13:09:49,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2021-05-02 13:09:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 13:09:49,268 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:49,268 INFO L523 BasicCegarLoop]: trace histogram [64, 60, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:49,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:09:49,484 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:49,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1170946139, now seen corresponding path program 59 times [2021-05-02 13:09:49,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:49,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885860337] [2021-05-02 13:09:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4249 backedges. 427 proven. 3660 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-05-02 13:09:51,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:51,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885860337] [2021-05-02 13:09:51,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885860337] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:51,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280772929] [2021-05-02 13:09:51,257 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 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 [2021-05-02 13:09:51,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 65 check-sat command(s) [2021-05-02 13:09:51,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:51,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 13:09:51,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:51,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4249 backedges. 427 proven. 3660 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-05-02 13:09:51,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280772929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:51,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:51,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 65 [2021-05-02 13:09:51,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813371891] [2021-05-02 13:09:51,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 13:09:51,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 13:09:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 13:09:51,727 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 64 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:09:55,480 INFO L93 Difference]: Finished difference Result 198 states and 211 transitions. [2021-05-02 13:09:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 13:09:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 64 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-02 13:09:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:09:55,482 INFO L225 Difference]: With dead ends: 198 [2021-05-02 13:09:55,482 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 13:09:55,483 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 4895.9ms TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2021-05-02 13:09:55,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 13:09:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-05-02 13:09:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.044871794871795) internal successors, (163), 157 states have internal predecessors, (163), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:09:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 169 transitions. [2021-05-02 13:09:55,497 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 169 transitions. Word has length 157 [2021-05-02 13:09:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:09:55,497 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 169 transitions. [2021-05-02 13:09:55,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 64 states have internal predecessors, (137), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:09:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 169 transitions. [2021-05-02 13:09:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 13:09:55,498 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:09:55,498 INFO L523 BasicCegarLoop]: trace histogram [65, 61, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:09:55,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-02 13:09:55,717 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:09:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:09:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash -395970878, now seen corresponding path program 60 times [2021-05-02 13:09:55,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:09:55,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114451018] [2021-05-02 13:09:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:09:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:09:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:09:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4378 backedges. 434 proven. 3782 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-05-02 13:09:57,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:09:57,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114451018] [2021-05-02 13:09:57,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114451018] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:57,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107081299] [2021-05-02 13:09:57,611 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 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 [2021-05-02 13:09:57,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 13:09:57,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:09:57,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 13:09:57,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:09:57,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:57,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:57,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:57,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:57,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:57,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:57,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:09:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4378 backedges. 443 proven. 153 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2021-05-02 13:09:58,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107081299] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:09:58,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:09:58,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 22] total 85 [2021-05-02 13:09:58,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729695007] [2021-05-02 13:09:58,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 13:09:58,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:09:58,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 13:09:58,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2248, Invalid=4892, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 13:09:58,645 INFO L87 Difference]: Start difference. First operand 163 states and 169 transitions. Second operand has 85 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 84 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:04,890 INFO L93 Difference]: Finished difference Result 221 states and 245 transitions. [2021-05-02 13:10:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 13:10:04,892 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 84 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-02 13:10:04,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:04,893 INFO L225 Difference]: With dead ends: 221 [2021-05-02 13:10:04,893 INFO L226 Difference]: Without dead ends: 186 [2021-05-02 13:10:04,895 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5024 ImplicationChecksByTransitivity, 7582.5ms TimeCoverageRelationStatistics Valid=8722, Invalid=19000, Unknown=0, NotChecked=0, Total=27722 [2021-05-02 13:10:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-02 13:10:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2021-05-02 13:10:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 159 states have (on average 1.0440251572327044) internal successors, (166), 160 states have internal predecessors, (166), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2021-05-02 13:10:04,946 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 159 [2021-05-02 13:10:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:04,946 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 172 transitions. [2021-05-02 13:10:04,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 84 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 172 transitions. [2021-05-02 13:10:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-05-02 13:10:04,948 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:04,948 INFO L523 BasicCegarLoop]: trace histogram [66, 62, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:10:05,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:10:05,149 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:10:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:10:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1811763932, now seen corresponding path program 61 times [2021-05-02 13:10:05,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:10:05,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658140817] [2021-05-02 13:10:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:10:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:10:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4527 backedges. 441 proven. 3906 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-02 13:10:07,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:10:07,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658140817] [2021-05-02 13:10:07,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658140817] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:07,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275784836] [2021-05-02 13:10:07,427 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 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 [2021-05-02 13:10:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:07,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 13:10:07,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:10:07,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4527 backedges. 441 proven. 3906 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-02 13:10:07,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275784836] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:07,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:10:07,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 13:10:07,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334727291] [2021-05-02 13:10:07,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 13:10:07,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:10:07,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 13:10:07,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 13:10:07,919 INFO L87 Difference]: Start difference. First operand 166 states and 172 transitions. Second operand has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:11,923 INFO L93 Difference]: Finished difference Result 204 states and 217 transitions. [2021-05-02 13:10:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 13:10:11,924 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162 [2021-05-02 13:10:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:11,925 INFO L225 Difference]: With dead ends: 204 [2021-05-02 13:10:11,925 INFO L226 Difference]: Without dead ends: 168 [2021-05-02 13:10:11,927 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 5562.8ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 13:10:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-02 13:10:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-02 13:10:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 161 states have (on average 1.0434782608695652) internal successors, (168), 162 states have internal predecessors, (168), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2021-05-02 13:10:11,941 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 162 [2021-05-02 13:10:11,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:11,942 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2021-05-02 13:10:11,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2021-05-02 13:10:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-05-02 13:10:11,943 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:11,943 INFO L523 BasicCegarLoop]: trace histogram [67, 63, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:10:12,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 13:10:12,163 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:10:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:10:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash 28534823, now seen corresponding path program 62 times [2021-05-02 13:10:12,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:10:12,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272941933] [2021-05-02 13:10:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:10:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:10:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4660 backedges. 448 proven. 4032 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-02 13:10:14,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:10:14,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272941933] [2021-05-02 13:10:14,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272941933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:14,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63340816] [2021-05-02 13:10:14,254 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 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 [2021-05-02 13:10:14,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:10:14,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:10:14,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 65 conjunts are in the unsatisfiable core [2021-05-02 13:10:14,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:10:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4660 backedges. 448 proven. 4032 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-02 13:10:14,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63340816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:14,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:10:14,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2021-05-02 13:10:14,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386370430] [2021-05-02 13:10:14,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 13:10:14,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:10:14,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 13:10:14,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 13:10:14,725 INFO L87 Difference]: Start difference. First operand 168 states and 174 transitions. Second operand has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 67 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:18,664 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2021-05-02 13:10:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 13:10:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 67 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164 [2021-05-02 13:10:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:18,666 INFO L225 Difference]: With dead ends: 206 [2021-05-02 13:10:18,667 INFO L226 Difference]: Without dead ends: 170 [2021-05-02 13:10:18,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 5375.8ms TimeCoverageRelationStatistics Valid=6502, Invalid=10790, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 13:10:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-02 13:10:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-02 13:10:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 163 states have (on average 1.0429447852760736) internal successors, (170), 164 states have internal predecessors, (170), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 176 transitions. [2021-05-02 13:10:18,683 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 176 transitions. Word has length 164 [2021-05-02 13:10:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:18,683 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 176 transitions. [2021-05-02 13:10:18,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 67 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 176 transitions. [2021-05-02 13:10:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-05-02 13:10:18,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:18,684 INFO L523 BasicCegarLoop]: trace histogram [68, 64, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:10:18,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:10:18,907 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:10:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:10:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash -970887574, now seen corresponding path program 63 times [2021-05-02 13:10:18,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:10:18,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974668453] [2021-05-02 13:10:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:10:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:10:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4795 backedges. 455 proven. 4160 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-05-02 13:10:21,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:10:21,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974668453] [2021-05-02 13:10:21,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974668453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:21,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911529635] [2021-05-02 13:10:21,078 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 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 [2021-05-02 13:10:21,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 13:10:21,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:10:21,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 13:10:21,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:10:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4795 backedges. 576 proven. 16 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2021-05-02 13:10:21,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911529635] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:21,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:10:21,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 7] total 73 [2021-05-02 13:10:21,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024035756] [2021-05-02 13:10:21,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 13:10:21,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:10:21,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 13:10:21,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:10:21,690 INFO L87 Difference]: Start difference. First operand 170 states and 176 transitions. Second operand has 73 states, 73 states have (on average 2.1232876712328768) internal successors, (155), 72 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:26,359 INFO L93 Difference]: Finished difference Result 211 states and 227 transitions. [2021-05-02 13:10:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 13:10:26,360 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1232876712328768) internal successors, (155), 72 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2021-05-02 13:10:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:26,361 INFO L225 Difference]: With dead ends: 211 [2021-05-02 13:10:26,361 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 13:10:26,362 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2479 ImplicationChecksByTransitivity, 6604.4ms TimeCoverageRelationStatistics Valid=7668, Invalid=12638, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 13:10:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 13:10:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 13:10:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 167 states have (on average 1.0479041916167664) internal successors, (175), 168 states have internal predecessors, (175), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 181 transitions. [2021-05-02 13:10:26,377 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 181 transitions. Word has length 166 [2021-05-02 13:10:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:26,378 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 181 transitions. [2021-05-02 13:10:26,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.1232876712328768) internal successors, (155), 72 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 181 transitions. [2021-05-02 13:10:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-05-02 13:10:26,378 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:26,379 INFO L523 BasicCegarLoop]: trace histogram [70, 65, 18, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:10:26,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 13:10:26,600 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:10:26,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:10:26,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1484887218, now seen corresponding path program 64 times [2021-05-02 13:10:26,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:10:26,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389753700] [2021-05-02 13:10:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:10:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:10:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5071 backedges. 594 proven. 4290 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-05-02 13:10:28,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:10:28,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389753700] [2021-05-02 13:10:28,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389753700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:28,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025499616] [2021-05-02 13:10:28,941 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 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 [2021-05-02 13:10:29,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:10:29,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:10:29,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 13:10:29,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:10:29,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5071 backedges. 594 proven. 4290 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-05-02 13:10:29,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025499616] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:29,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:10:29,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 13:10:29,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011027140] [2021-05-02 13:10:29,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 13:10:29,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:10:29,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 13:10:29,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 13:10:29,414 INFO L87 Difference]: Start difference. First operand 174 states and 181 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:33,862 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2021-05-02 13:10:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 13:10:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 170 [2021-05-02 13:10:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:33,865 INFO L225 Difference]: With dead ends: 214 [2021-05-02 13:10:33,865 INFO L226 Difference]: Without dead ends: 176 [2021-05-02 13:10:33,866 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 6002.5ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 13:10:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-02 13:10:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-02 13:10:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 169 states have (on average 1.047337278106509) internal successors, (177), 170 states have internal predecessors, (177), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 183 transitions. [2021-05-02 13:10:33,884 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 183 transitions. Word has length 170 [2021-05-02 13:10:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:33,885 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 183 transitions. [2021-05-02 13:10:33,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:33,885 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 183 transitions. [2021-05-02 13:10:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-05-02 13:10:33,886 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:33,886 INFO L523 BasicCegarLoop]: trace histogram [71, 66, 18, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:10:34,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 13:10:34,105 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:10:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:10:34,106 INFO L82 PathProgramCache]: Analyzing trace with hash -803955531, now seen corresponding path program 65 times [2021-05-02 13:10:34,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:10:34,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44535226] [2021-05-02 13:10:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:10:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:36,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:10:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5212 backedges. 603 proven. 4422 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-05-02 13:10:36,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:10:36,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44535226] [2021-05-02 13:10:36,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44535226] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:36,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216191481] [2021-05-02 13:10:36,403 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 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 [2021-05-02 13:10:36,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-05-02 13:10:36,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:10:36,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 13:10:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:10:36,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5212 backedges. 603 proven. 4422 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-05-02 13:10:36,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216191481] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:36,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:10:36,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 71 [2021-05-02 13:10:36,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358567389] [2021-05-02 13:10:36,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 13:10:36,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:10:36,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 13:10:36,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 13:10:36,937 INFO L87 Difference]: Start difference. First operand 176 states and 183 transitions. Second operand has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:41,234 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2021-05-02 13:10:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 13:10:41,235 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 172 [2021-05-02 13:10:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:41,236 INFO L225 Difference]: With dead ends: 216 [2021-05-02 13:10:41,236 INFO L226 Difference]: Without dead ends: 178 [2021-05-02 13:10:41,238 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 5881.9ms TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 13:10:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-02 13:10:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-02 13:10:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 171 states have (on average 1.0467836257309941) internal successors, (179), 172 states have internal predecessors, (179), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 185 transitions. [2021-05-02 13:10:41,254 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 185 transitions. Word has length 172 [2021-05-02 13:10:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:41,254 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 185 transitions. [2021-05-02 13:10:41,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 185 transitions. [2021-05-02 13:10:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-05-02 13:10:41,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:41,255 INFO L523 BasicCegarLoop]: trace histogram [72, 67, 18, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:10:41,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 13:10:41,475 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:10:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:10:41,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1358581768, now seen corresponding path program 66 times [2021-05-02 13:10:41,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:10:41,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802154015] [2021-05-02 13:10:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:10:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:10:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5355 backedges. 612 proven. 4556 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-05-02 13:10:43,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:10:43,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802154015] [2021-05-02 13:10:43,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802154015] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:43,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078660082] [2021-05-02 13:10:43,790 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 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 [2021-05-02 13:10:43,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 13:10:43,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:10:43,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 13:10:43,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:10:44,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5355 backedges. 628 proven. 171 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2021-05-02 13:10:44,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078660082] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:44,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:10:44,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 24] total 93 [2021-05-02 13:10:44,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865237702] [2021-05-02 13:10:44,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 13:10:44,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:10:44,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 13:10:44,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2692, Invalid=5864, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 13:10:44,823 INFO L87 Difference]: Start difference. First operand 178 states and 185 transitions. Second operand has 93 states, 93 states have (on average 1.935483870967742) internal successors, (180), 92 states have internal predecessors, (180), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:52,229 INFO L93 Difference]: Finished difference Result 249 states and 280 transitions. [2021-05-02 13:10:52,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 13:10:52,230 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.935483870967742) internal successors, (180), 92 states have internal predecessors, (180), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 174 [2021-05-02 13:10:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:52,231 INFO L225 Difference]: With dead ends: 249 [2021-05-02 13:10:52,231 INFO L226 Difference]: Without dead ends: 211 [2021-05-02 13:10:52,233 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6133 ImplicationChecksByTransitivity, 8983.0ms TimeCoverageRelationStatistics Valid=10382, Invalid=22924, Unknown=0, NotChecked=0, Total=33306 [2021-05-02 13:10:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-02 13:10:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 181. [2021-05-02 13:10:52,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 174 states have (on average 1.0459770114942528) internal successors, (182), 175 states have internal predecessors, (182), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 188 transitions. [2021-05-02 13:10:52,250 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 188 transitions. Word has length 174 [2021-05-02 13:10:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:52,250 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 188 transitions. [2021-05-02 13:10:52,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 1.935483870967742) internal successors, (180), 92 states have internal predecessors, (180), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 188 transitions. [2021-05-02 13:10:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 13:10:52,273 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:52,273 INFO L523 BasicCegarLoop]: trace histogram [73, 68, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:10:52,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:10:52,489 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:10:52,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:10:52,490 INFO L82 PathProgramCache]: Analyzing trace with hash 737213640, now seen corresponding path program 67 times [2021-05-02 13:10:52,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:10:52,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253037725] [2021-05-02 13:10:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:10:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:54,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:10:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 621 proven. 4692 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-05-02 13:10:54,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:10:54,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253037725] [2021-05-02 13:10:54,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253037725] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:54,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026437824] [2021-05-02 13:10:54,840 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 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 [2021-05-02 13:10:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:10:54,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 13:10:54,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:10:54,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:54,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:54,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:54,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:54,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:54,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:54,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:54,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:10:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 621 proven. 4692 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-05-02 13:10:55,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026437824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:10:55,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:10:55,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 13:10:55,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735609880] [2021-05-02 13:10:55,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 13:10:55,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:10:55,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 13:10:55,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 13:10:55,491 INFO L87 Difference]: Start difference. First operand 181 states and 188 transitions. Second operand has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:10:59,814 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2021-05-02 13:10:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 13:10:59,815 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-02 13:10:59,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:10:59,816 INFO L225 Difference]: With dead ends: 222 [2021-05-02 13:10:59,816 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 13:10:59,818 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5876.4ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 13:10:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 13:10:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-05-02 13:10:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 176 states have (on average 1.0454545454545454) internal successors, (184), 177 states have internal predecessors, (184), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:10:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 190 transitions. [2021-05-02 13:10:59,833 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 190 transitions. Word has length 177 [2021-05-02 13:10:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:10:59,834 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 190 transitions. [2021-05-02 13:10:59,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:10:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 190 transitions. [2021-05-02 13:10:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 13:10:59,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:10:59,835 INFO L523 BasicCegarLoop]: trace histogram [74, 69, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:11:00,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:11:00,056 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:11:00,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:11:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash -636978331, now seen corresponding path program 68 times [2021-05-02 13:11:00,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:11:00,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833194452] [2021-05-02 13:11:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:11:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:11:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5666 backedges. 630 proven. 4830 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-05-02 13:11:02,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:11:02,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833194452] [2021-05-02 13:11:02,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833194452] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:02,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334885677] [2021-05-02 13:11:02,442 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 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 [2021-05-02 13:11:02,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:11:02,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:11:02,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 13:11:02,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:11:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5666 backedges. 630 proven. 4830 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-05-02 13:11:02,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334885677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:02,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:11:02,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 74 [2021-05-02 13:11:02,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687259146] [2021-05-02 13:11:02,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 13:11:02,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:11:02,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 13:11:02,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 13:11:02,984 INFO L87 Difference]: Start difference. First operand 183 states and 190 transitions. Second operand has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:11:07,964 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2021-05-02 13:11:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 13:11:07,966 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-02 13:11:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:11:07,966 INFO L225 Difference]: With dead ends: 224 [2021-05-02 13:11:07,966 INFO L226 Difference]: Without dead ends: 185 [2021-05-02 13:11:07,968 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 6802.3ms TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 13:11:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-02 13:11:07,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-05-02 13:11:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 178 states have (on average 1.0449438202247192) internal successors, (186), 179 states have internal predecessors, (186), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:11:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions. [2021-05-02 13:11:07,985 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 179 [2021-05-02 13:11:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:11:07,985 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 192 transitions. [2021-05-02 13:11:07,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions. [2021-05-02 13:11:07,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 13:11:07,986 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:11:07,986 INFO L523 BasicCegarLoop]: trace histogram [75, 70, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:11:08,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:11:08,207 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:11:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:11:08,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1614464706, now seen corresponding path program 69 times [2021-05-02 13:11:08,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:11:08,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150833740] [2021-05-02 13:11:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:11:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:11:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5815 backedges. 639 proven. 4970 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-05-02 13:11:10,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:11:10,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150833740] [2021-05-02 13:11:10,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150833740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:10,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915437639] [2021-05-02 13:11:10,754 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 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 [2021-05-02 13:11:10,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-05-02 13:11:10,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:11:10,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 13:11:10,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:11:11,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:11,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5815 backedges. 655 proven. 190 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2021-05-02 13:11:12,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915437639] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:12,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:11:12,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 25] total 97 [2021-05-02 13:11:12,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482376778] [2021-05-02 13:11:12,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 13:11:12,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:11:12,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 13:11:12,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2929, Invalid=6383, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 13:11:12,569 INFO L87 Difference]: Start difference. First operand 185 states and 192 transitions. Second operand has 97 states, 97 states have (on average 1.9278350515463918) internal successors, (187), 96 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:21,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:11:21,094 INFO L93 Difference]: Finished difference Result 257 states and 288 transitions. [2021-05-02 13:11:21,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 13:11:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.9278350515463918) internal successors, (187), 96 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-02 13:11:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:11:21,109 INFO L225 Difference]: With dead ends: 257 [2021-05-02 13:11:21,110 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 13:11:21,112 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6670 ImplicationChecksByTransitivity, 10994.9ms TimeCoverageRelationStatistics Valid=11337, Invalid=24953, Unknown=0, NotChecked=0, Total=36290 [2021-05-02 13:11:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 13:11:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 188. [2021-05-02 13:11:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.0441988950276244) internal successors, (189), 182 states have internal predecessors, (189), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:11:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 195 transitions. [2021-05-02 13:11:21,153 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 195 transitions. Word has length 181 [2021-05-02 13:11:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:11:21,153 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 195 transitions. [2021-05-02 13:11:21,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 1.9278350515463918) internal successors, (187), 96 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 195 transitions. [2021-05-02 13:11:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-05-02 13:11:21,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:11:21,155 INFO L523 BasicCegarLoop]: trace histogram [76, 71, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:11:21,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-02 13:11:21,358 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:11:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:11:21,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1073633508, now seen corresponding path program 70 times [2021-05-02 13:11:21,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:11:21,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311678761] [2021-05-02 13:11:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:11:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:11:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5986 backedges. 648 proven. 5112 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 13:11:23,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:11:23,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311678761] [2021-05-02 13:11:23,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311678761] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:23,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540122306] [2021-05-02 13:11:23,665 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 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 [2021-05-02 13:11:23,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:11:23,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:11:23,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 13:11:23,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:11:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:23,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5986 backedges. 648 proven. 5112 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 13:11:24,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540122306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:24,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:11:24,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 13:11:24,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974576313] [2021-05-02 13:11:24,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 13:11:24,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:11:24,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 13:11:24,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 13:11:24,202 INFO L87 Difference]: Start difference. First operand 188 states and 195 transitions. Second operand has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:11:28,598 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2021-05-02 13:11:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 13:11:28,599 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 184 [2021-05-02 13:11:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:11:28,600 INFO L225 Difference]: With dead ends: 230 [2021-05-02 13:11:28,600 INFO L226 Difference]: Without dead ends: 190 [2021-05-02 13:11:28,602 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 6169.4ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 13:11:28,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-02 13:11:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-05-02 13:11:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 183 states have (on average 1.0437158469945356) internal successors, (191), 184 states have internal predecessors, (191), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:11:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 197 transitions. [2021-05-02 13:11:28,620 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 197 transitions. Word has length 184 [2021-05-02 13:11:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:11:28,621 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 197 transitions. [2021-05-02 13:11:28,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 197 transitions. [2021-05-02 13:11:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-05-02 13:11:28,622 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:11:28,622 INFO L523 BasicCegarLoop]: trace histogram [77, 72, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:11:28,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:11:28,842 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:11:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:11:28,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1664458663, now seen corresponding path program 71 times [2021-05-02 13:11:28,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:11:28,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286809862] [2021-05-02 13:11:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:11:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:11:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6139 backedges. 657 proven. 5256 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 13:11:31,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:11:31,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286809862] [2021-05-02 13:11:31,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286809862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:31,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542742853] [2021-05-02 13:11:31,502 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 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 [2021-05-02 13:11:31,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-05-02 13:11:31,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:11:31,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 13:11:31,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:11:31,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6139 backedges. 657 proven. 5256 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 13:11:32,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542742853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:32,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:11:32,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 77 [2021-05-02 13:11:32,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465101144] [2021-05-02 13:11:32,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 13:11:32,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:11:32,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 13:11:32,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 13:11:32,123 INFO L87 Difference]: Start difference. First operand 190 states and 197 transitions. Second operand has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:37,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:11:37,472 INFO L93 Difference]: Finished difference Result 232 states and 247 transitions. [2021-05-02 13:11:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 13:11:37,473 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 186 [2021-05-02 13:11:37,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:11:37,477 INFO L225 Difference]: With dead ends: 232 [2021-05-02 13:11:37,477 INFO L226 Difference]: Without dead ends: 192 [2021-05-02 13:11:37,479 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2913 ImplicationChecksByTransitivity, 7178.9ms TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 13:11:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-02 13:11:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-02 13:11:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 185 states have (on average 1.0432432432432432) internal successors, (193), 186 states have internal predecessors, (193), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:11:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 199 transitions. [2021-05-02 13:11:37,538 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 199 transitions. Word has length 186 [2021-05-02 13:11:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:11:37,539 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 199 transitions. [2021-05-02 13:11:37,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 199 transitions. [2021-05-02 13:11:37,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-05-02 13:11:37,540 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:11:37,540 INFO L523 BasicCegarLoop]: trace histogram [78, 73, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:11:37,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:11:37,766 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:11:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:11:37,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1783217750, now seen corresponding path program 72 times [2021-05-02 13:11:37,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:11:37,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698933232] [2021-05-02 13:11:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:11:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:11:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6294 backedges. 666 proven. 5402 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 13:11:40,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:11:40,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698933232] [2021-05-02 13:11:40,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698933232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:40,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108051916] [2021-05-02 13:11:40,544 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 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 [2021-05-02 13:11:40,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-05-02 13:11:40,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:11:40,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 13:11:40,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:11:40,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:40,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:40,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:40,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:41,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:42,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:42,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:42,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:42,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6294 backedges. 682 proven. 210 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2021-05-02 13:11:42,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108051916] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:42,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:11:42,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 26] total 101 [2021-05-02 13:11:42,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150710720] [2021-05-02 13:11:42,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 13:11:42,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:11:42,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 13:11:42,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3176, Invalid=6924, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 13:11:42,133 INFO L87 Difference]: Start difference. First operand 192 states and 199 transitions. Second operand has 101 states, 101 states have (on average 1.9207920792079207) internal successors, (194), 100 states have internal predecessors, (194), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:11:51,700 INFO L93 Difference]: Finished difference Result 265 states and 296 transitions. [2021-05-02 13:11:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 13:11:51,702 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.9207920792079207) internal successors, (194), 100 states have internal predecessors, (194), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2021-05-02 13:11:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:11:51,703 INFO L225 Difference]: With dead ends: 265 [2021-05-02 13:11:51,703 INFO L226 Difference]: Without dead ends: 225 [2021-05-02 13:11:51,706 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7229 ImplicationChecksByTransitivity, 11689.7ms TimeCoverageRelationStatistics Valid=12334, Invalid=27068, Unknown=0, NotChecked=0, Total=39402 [2021-05-02 13:11:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-05-02 13:11:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 195. [2021-05-02 13:11:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 188 states have (on average 1.0425531914893618) internal successors, (196), 189 states have internal predecessors, (196), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:11:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2021-05-02 13:11:51,725 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 188 [2021-05-02 13:11:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:11:51,725 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 202 transitions. [2021-05-02 13:11:51,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 1.9207920792079207) internal successors, (194), 100 states have internal predecessors, (194), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:11:51,726 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 202 transitions. [2021-05-02 13:11:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 13:11:51,727 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:11:51,727 INFO L523 BasicCegarLoop]: trace histogram [79, 74, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:11:51,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:11:51,950 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:11:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:11:51,951 INFO L82 PathProgramCache]: Analyzing trace with hash 709335702, now seen corresponding path program 73 times [2021-05-02 13:11:51,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:11:51,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771999634] [2021-05-02 13:11:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:11:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:11:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6472 backedges. 675 proven. 5550 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-05-02 13:11:54,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:11:54,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771999634] [2021-05-02 13:11:54,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771999634] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:54,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650047194] [2021-05-02 13:11:54,184 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 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 [2021-05-02 13:11:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:11:54,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 13:11:54,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:11:54,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:11:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6472 backedges. 675 proven. 5550 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-05-02 13:11:54,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650047194] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:11:54,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:11:54,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 13:11:54,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674716576] [2021-05-02 13:11:54,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 13:11:54,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:11:54,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 13:11:54,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 13:11:54,916 INFO L87 Difference]: Start difference. First operand 195 states and 202 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:12:00,356 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2021-05-02 13:12:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 13:12:00,357 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-02 13:12:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:12:00,373 INFO L225 Difference]: With dead ends: 238 [2021-05-02 13:12:00,373 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 13:12:00,375 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6837.9ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 13:12:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 13:12:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-05-02 13:12:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 190 states have (on average 1.0421052631578946) internal successors, (198), 191 states have internal predecessors, (198), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:12:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 204 transitions. [2021-05-02 13:12:00,406 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 204 transitions. Word has length 191 [2021-05-02 13:12:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:12:00,406 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 204 transitions. [2021-05-02 13:12:00,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 204 transitions. [2021-05-02 13:12:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 13:12:00,407 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:12:00,407 INFO L523 BasicCegarLoop]: trace histogram [80, 75, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:12:00,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 13:12:00,620 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:12:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:12:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash -33897869, now seen corresponding path program 74 times [2021-05-02 13:12:00,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:12:00,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158794464] [2021-05-02 13:12:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:12:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:12:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6631 backedges. 684 proven. 5700 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-05-02 13:12:02,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:12:02,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158794464] [2021-05-02 13:12:02,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158794464] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:02,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966393731] [2021-05-02 13:12:02,970 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 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 [2021-05-02 13:12:03,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:12:03,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:12:03,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 13:12:03,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:12:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6631 backedges. 684 proven. 5700 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-05-02 13:12:03,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966393731] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:03,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:12:03,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 13:12:03,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068979916] [2021-05-02 13:12:03,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 13:12:03,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:12:03,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 13:12:03,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 13:12:03,555 INFO L87 Difference]: Start difference. First operand 197 states and 204 transitions. Second operand has 80 states, 80 states have (on average 2.0875) internal successors, (167), 79 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:12:09,416 INFO L93 Difference]: Finished difference Result 240 states and 255 transitions. [2021-05-02 13:12:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 13:12:09,418 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0875) internal successors, (167), 79 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-02 13:12:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:12:09,419 INFO L225 Difference]: With dead ends: 240 [2021-05-02 13:12:09,419 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 13:12:09,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 7273.6ms TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 13:12:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 13:12:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-05-02 13:12:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 192 states have (on average 1.0416666666666667) internal successors, (200), 193 states have internal predecessors, (200), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:12:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 206 transitions. [2021-05-02 13:12:09,441 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 206 transitions. Word has length 193 [2021-05-02 13:12:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:12:09,441 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 206 transitions. [2021-05-02 13:12:09,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.0875) internal successors, (167), 79 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 206 transitions. [2021-05-02 13:12:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 13:12:09,442 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:12:09,442 INFO L523 BasicCegarLoop]: trace histogram [81, 76, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:12:09,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:12:09,665 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:12:09,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:12:09,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1316788464, now seen corresponding path program 75 times [2021-05-02 13:12:09,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:12:09,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077399342] [2021-05-02 13:12:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:12:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:12:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6792 backedges. 693 proven. 5852 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-05-02 13:12:12,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:12:12,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077399342] [2021-05-02 13:12:12,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077399342] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:12,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834502519] [2021-05-02 13:12:12,725 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 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 [2021-05-02 13:12:12,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-05-02 13:12:12,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:12:12,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 13:12:12,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:12:13,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:13,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6792 backedges. 709 proven. 231 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2021-05-02 13:12:14,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834502519] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:14,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:12:14,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 27] total 105 [2021-05-02 13:12:14,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844751412] [2021-05-02 13:12:14,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 13:12:14,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:12:14,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 13:12:14,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3433, Invalid=7487, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 13:12:14,440 INFO L87 Difference]: Start difference. First operand 199 states and 206 transitions. Second operand has 105 states, 105 states have (on average 1.9142857142857144) internal successors, (201), 104 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:12:26,121 INFO L93 Difference]: Finished difference Result 273 states and 304 transitions. [2021-05-02 13:12:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 13:12:26,123 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.9142857142857144) internal successors, (201), 104 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2021-05-02 13:12:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:12:26,124 INFO L225 Difference]: With dead ends: 273 [2021-05-02 13:12:26,124 INFO L226 Difference]: Without dead ends: 232 [2021-05-02 13:12:26,127 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7810 ImplicationChecksByTransitivity, 13937.4ms TimeCoverageRelationStatistics Valid=13373, Invalid=29269, Unknown=0, NotChecked=0, Total=42642 [2021-05-02 13:12:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-02 13:12:26,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 202. [2021-05-02 13:12:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 195 states have (on average 1.041025641025641) internal successors, (203), 196 states have internal predecessors, (203), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:12:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 209 transitions. [2021-05-02 13:12:26,148 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 209 transitions. Word has length 195 [2021-05-02 13:12:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:12:26,148 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 209 transitions. [2021-05-02 13:12:26,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 1.9142857142857144) internal successors, (201), 104 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 209 transitions. [2021-05-02 13:12:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-05-02 13:12:26,149 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:12:26,149 INFO L523 BasicCegarLoop]: trace histogram [82, 77, 22, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:12:26,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 13:12:26,360 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:12:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:12:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 189128982, now seen corresponding path program 76 times [2021-05-02 13:12:26,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:12:26,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760119327] [2021-05-02 13:12:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:12:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:29,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:12:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6977 backedges. 702 proven. 6006 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-05-02 13:12:29,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:12:29,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760119327] [2021-05-02 13:12:29,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760119327] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:29,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569884095] [2021-05-02 13:12:29,946 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 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 [2021-05-02 13:12:30,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:12:30,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:12:30,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 13:12:30,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:12:30,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6977 backedges. 702 proven. 6006 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-05-02 13:12:30,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569884095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:30,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:12:30,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 13:12:30,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200525645] [2021-05-02 13:12:30,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 13:12:30,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:12:30,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 13:12:30,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 13:12:30,619 INFO L87 Difference]: Start difference. First operand 202 states and 209 transitions. Second operand has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:12:37,373 INFO L93 Difference]: Finished difference Result 246 states and 261 transitions. [2021-05-02 13:12:37,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 13:12:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 198 [2021-05-02 13:12:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:12:37,376 INFO L225 Difference]: With dead ends: 246 [2021-05-02 13:12:37,376 INFO L226 Difference]: Without dead ends: 204 [2021-05-02 13:12:37,377 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 9595.2ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 13:12:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-05-02 13:12:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-05-02 13:12:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 197 states have (on average 1.0406091370558375) internal successors, (205), 198 states have internal predecessors, (205), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:12:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 211 transitions. [2021-05-02 13:12:37,397 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 211 transitions. Word has length 198 [2021-05-02 13:12:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:12:37,397 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 211 transitions. [2021-05-02 13:12:37,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 211 transitions. [2021-05-02 13:12:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-05-02 13:12:37,398 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:12:37,398 INFO L523 BasicCegarLoop]: trace histogram [83, 78, 22, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:12:37,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:12:37,613 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:12:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:12:37,614 INFO L82 PathProgramCache]: Analyzing trace with hash 862754457, now seen corresponding path program 77 times [2021-05-02 13:12:37,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:12:37,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416971014] [2021-05-02 13:12:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:12:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:12:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7142 backedges. 711 proven. 6162 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-05-02 13:12:41,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:12:41,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416971014] [2021-05-02 13:12:41,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416971014] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:41,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658622382] [2021-05-02 13:12:41,496 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 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 [2021-05-02 13:12:41,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2021-05-02 13:12:41,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:12:41,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 13:12:41,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:12:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:41,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7142 backedges. 711 proven. 6162 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-05-02 13:12:42,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658622382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:42,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:12:42,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 83 [2021-05-02 13:12:42,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032414654] [2021-05-02 13:12:42,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 13:12:42,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:12:42,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 13:12:42,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 13:12:42,187 INFO L87 Difference]: Start difference. First operand 204 states and 211 transitions. Second operand has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:49,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:12:49,647 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2021-05-02 13:12:49,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 13:12:49,658 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 200 [2021-05-02 13:12:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:12:49,668 INFO L225 Difference]: With dead ends: 248 [2021-05-02 13:12:49,668 INFO L226 Difference]: Without dead ends: 206 [2021-05-02 13:12:49,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 10428.9ms TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 13:12:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-05-02 13:12:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-05-02 13:12:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 199 states have (on average 1.0402010050251256) internal successors, (207), 200 states have internal predecessors, (207), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:12:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 213 transitions. [2021-05-02 13:12:49,692 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 213 transitions. Word has length 200 [2021-05-02 13:12:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:12:49,692 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 213 transitions. [2021-05-02 13:12:49,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:12:49,692 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 213 transitions. [2021-05-02 13:12:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-05-02 13:12:49,693 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:12:49,693 INFO L523 BasicCegarLoop]: trace histogram [84, 79, 22, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:12:49,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:12:49,909 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:12:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:12:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash -323225764, now seen corresponding path program 78 times [2021-05-02 13:12:49,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:12:49,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877482527] [2021-05-02 13:12:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:12:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:12:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:12:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 720 proven. 6320 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-05-02 13:12:52,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:12:52,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877482527] [2021-05-02 13:12:52,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877482527] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:52,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51576354] [2021-05-02 13:12:52,818 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 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 [2021-05-02 13:12:52,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 13:12:52,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:12:52,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 13:12:52,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:12:53,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:12:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 869 proven. 25 refuted. 0 times theorem prover too weak. 6415 trivial. 0 not checked. [2021-05-02 13:12:53,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51576354] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:12:53,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:12:53,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 8] total 89 [2021-05-02 13:12:53,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008279182] [2021-05-02 13:12:53,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 13:12:53,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:12:53,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 13:12:53,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 13:12:53,825 INFO L87 Difference]: Start difference. First operand 206 states and 213 transitions. Second operand has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:13:02,257 INFO L93 Difference]: Finished difference Result 253 states and 271 transitions. [2021-05-02 13:13:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 13:13:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 202 [2021-05-02 13:13:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:13:02,260 INFO L225 Difference]: With dead ends: 253 [2021-05-02 13:13:02,260 INFO L226 Difference]: Without dead ends: 211 [2021-05-02 13:13:02,262 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3734 ImplicationChecksByTransitivity, 10941.2ms TimeCoverageRelationStatistics Valid=11484, Invalid=18966, Unknown=0, NotChecked=0, Total=30450 [2021-05-02 13:13:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-02 13:13:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2021-05-02 13:13:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 203 states have (on average 1.0443349753694582) internal successors, (212), 204 states have internal predecessors, (212), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:13:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 218 transitions. [2021-05-02 13:13:02,284 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 218 transitions. Word has length 202 [2021-05-02 13:13:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:13:02,284 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 218 transitions. [2021-05-02 13:13:02,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 218 transitions. [2021-05-02 13:13:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-05-02 13:13:02,286 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:13:02,286 INFO L523 BasicCegarLoop]: trace histogram [86, 80, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:13:02,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:13:02,501 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:13:02,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:13:02,501 INFO L82 PathProgramCache]: Analyzing trace with hash -283940572, now seen corresponding path program 79 times [2021-05-02 13:13:02,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:13:02,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517673998] [2021-05-02 13:13:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:13:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:06,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:13:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7649 backedges. 891 proven. 6480 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-05-02 13:13:06,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:13:06,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517673998] [2021-05-02 13:13:06,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517673998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:06,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187886085] [2021-05-02 13:13:06,998 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 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 [2021-05-02 13:13:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:07,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 13:13:07,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:13:07,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7649 backedges. 891 proven. 6480 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-05-02 13:13:07,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187886085] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:07,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:13:07,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 13:13:07,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482472686] [2021-05-02 13:13:07,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 13:13:07,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:13:07,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 13:13:07,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 13:13:07,732 INFO L87 Difference]: Start difference. First operand 210 states and 218 transitions. Second operand has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:13:15,470 INFO L93 Difference]: Finished difference Result 256 states and 273 transitions. [2021-05-02 13:13:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 13:13:15,472 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 206 [2021-05-02 13:13:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:13:15,473 INFO L225 Difference]: With dead ends: 256 [2021-05-02 13:13:15,473 INFO L226 Difference]: Without dead ends: 212 [2021-05-02 13:13:15,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 11462.2ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 13:13:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-02 13:13:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-05-02 13:13:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 205 states have (on average 1.0439024390243903) internal successors, (214), 206 states have internal predecessors, (214), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:13:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 220 transitions. [2021-05-02 13:13:15,497 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 220 transitions. Word has length 206 [2021-05-02 13:13:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:13:15,497 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 220 transitions. [2021-05-02 13:13:15,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 220 transitions. [2021-05-02 13:13:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-05-02 13:13:15,498 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:13:15,499 INFO L523 BasicCegarLoop]: trace histogram [87, 81, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:13:15,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:13:15,704 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:13:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:13:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash -759567449, now seen corresponding path program 80 times [2021-05-02 13:13:15,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:13:15,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442614149] [2021-05-02 13:13:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:13:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:13:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7822 backedges. 902 proven. 6642 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-05-02 13:13:19,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:13:19,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442614149] [2021-05-02 13:13:19,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442614149] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:19,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661160106] [2021-05-02 13:13:19,614 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 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 [2021-05-02 13:13:19,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:13:19,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:13:19,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 13:13:19,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:13:19,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:19,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7822 backedges. 902 proven. 6642 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-05-02 13:13:20,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661160106] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:20,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:13:20,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 86 [2021-05-02 13:13:20,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456070466] [2021-05-02 13:13:20,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 13:13:20,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:13:20,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 13:13:20,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 13:13:20,345 INFO L87 Difference]: Start difference. First operand 212 states and 220 transitions. Second operand has 86 states, 86 states have (on average 2.0813953488372094) internal successors, (179), 85 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:13:28,222 INFO L93 Difference]: Finished difference Result 258 states and 275 transitions. [2021-05-02 13:13:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 13:13:28,224 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0813953488372094) internal successors, (179), 85 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208 [2021-05-02 13:13:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:13:28,225 INFO L225 Difference]: With dead ends: 258 [2021-05-02 13:13:28,225 INFO L226 Difference]: Without dead ends: 214 [2021-05-02 13:13:28,227 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3642 ImplicationChecksByTransitivity, 10954.8ms TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 13:13:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-05-02 13:13:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-05-02 13:13:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 207 states have (on average 1.0434782608695652) internal successors, (216), 208 states have internal predecessors, (216), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:13:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 222 transitions. [2021-05-02 13:13:28,251 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 222 transitions. Word has length 208 [2021-05-02 13:13:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:13:28,252 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 222 transitions. [2021-05-02 13:13:28,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.0813953488372094) internal successors, (179), 85 states have internal predecessors, (179), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 222 transitions. [2021-05-02 13:13:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-05-02 13:13:28,254 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:13:28,254 INFO L523 BasicCegarLoop]: trace histogram [88, 82, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:13:28,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:13:28,478 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:13:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:13:28,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1724504426, now seen corresponding path program 81 times [2021-05-02 13:13:28,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:13:28,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326196962] [2021-05-02 13:13:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:13:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:33,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:13:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7997 backedges. 913 proven. 6806 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-05-02 13:13:33,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:13:33,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326196962] [2021-05-02 13:13:33,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326196962] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:33,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732519053] [2021-05-02 13:13:33,682 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 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 [2021-05-02 13:13:33,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-05-02 13:13:33,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:13:33,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 13:13:33,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:13:34,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:34,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7997 backedges. 938 proven. 253 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2021-05-02 13:13:35,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732519053] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:35,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:13:35,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 28] total 112 [2021-05-02 13:13:35,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139223125] [2021-05-02 13:13:35,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 13:13:35,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:13:35,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 13:13:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3949, Invalid=8483, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 13:13:35,983 INFO L87 Difference]: Start difference. First operand 214 states and 222 transitions. Second operand has 112 states, 112 states have (on average 1.9285714285714286) internal successors, (216), 111 states have internal predecessors, (216), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:13:49,509 INFO L93 Difference]: Finished difference Result 303 states and 342 transitions. [2021-05-02 13:13:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-05-02 13:13:49,511 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.9285714285714286) internal successors, (216), 111 states have internal predecessors, (216), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210 [2021-05-02 13:13:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:13:49,512 INFO L225 Difference]: With dead ends: 303 [2021-05-02 13:13:49,512 INFO L226 Difference]: Without dead ends: 259 [2021-05-02 13:13:49,515 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8965 ImplicationChecksByTransitivity, 18358.1ms TimeCoverageRelationStatistics Valid=15161, Invalid=33459, Unknown=0, NotChecked=0, Total=48620 [2021-05-02 13:13:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-05-02 13:13:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 217. [2021-05-02 13:13:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.042857142857143) internal successors, (219), 211 states have internal predecessors, (219), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:13:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 225 transitions. [2021-05-02 13:13:49,539 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 225 transitions. Word has length 210 [2021-05-02 13:13:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:13:49,539 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 225 transitions. [2021-05-02 13:13:49,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 1.9285714285714286) internal successors, (216), 111 states have internal predecessors, (216), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:13:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 225 transitions. [2021-05-02 13:13:49,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 13:13:49,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:13:49,541 INFO L523 BasicCegarLoop]: trace histogram [89, 83, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:13:49,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:13:49,757 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:13:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:13:49,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1641605354, now seen corresponding path program 82 times [2021-05-02 13:13:49,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:13:49,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969987526] [2021-05-02 13:13:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:13:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:13:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:13:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8197 backedges. 924 proven. 6972 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-05-02 13:13:55,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:13:55,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969987526] [2021-05-02 13:13:55,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969987526] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:55,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281310155] [2021-05-02 13:13:55,192 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 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 [2021-05-02 13:13:55,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:13:55,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:13:55,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 13:13:55,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:13:55,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:55,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:13:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8197 backedges. 924 proven. 6972 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-05-02 13:13:56,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281310155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:13:56,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:13:56,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 13:13:56,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346108972] [2021-05-02 13:13:56,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 13:13:56,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:13:56,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 13:13:56,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 13:13:56,461 INFO L87 Difference]: Start difference. First operand 217 states and 225 transitions. Second operand has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:14:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:14:08,671 INFO L93 Difference]: Finished difference Result 264 states and 281 transitions. [2021-05-02 13:14:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 13:14:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-02 13:14:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:14:08,675 INFO L225 Difference]: With dead ends: 264 [2021-05-02 13:14:08,675 INFO L226 Difference]: Without dead ends: 219 [2021-05-02 13:14:08,678 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 16310.8ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 13:14:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-05-02 13:14:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-05-02 13:14:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 212 states have (on average 1.0424528301886793) internal successors, (221), 213 states have internal predecessors, (221), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:14:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2021-05-02 13:14:08,702 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 213 [2021-05-02 13:14:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:14:08,702 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2021-05-02 13:14:08,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:14:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2021-05-02 13:14:08,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 13:14:08,703 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:14:08,703 INFO L523 BasicCegarLoop]: trace histogram [90, 84, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:14:08,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:14:08,928 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:14:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:14:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash -188462285, now seen corresponding path program 83 times [2021-05-02 13:14:08,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:14:08,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712376267] [2021-05-02 13:14:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:14:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:14:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:14:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:14:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8376 backedges. 935 proven. 7140 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-05-02 13:14:16,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:14:16,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712376267] [2021-05-02 13:14:16,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712376267] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:14:16,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415420583] [2021-05-02 13:14:16,221 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 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 [2021-05-02 13:14:16,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2021-05-02 13:14:16,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:14:16,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 13:14:16,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:14:16,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:16,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8376 backedges. 935 proven. 7140 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-05-02 13:14:17,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415420583] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:14:17,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:14:17,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 89 [2021-05-02 13:14:17,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489938818] [2021-05-02 13:14:17,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 13:14:17,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:14:17,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 13:14:17,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 13:14:17,616 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand has 89 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 88 states have internal predecessors, (185), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:14:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:14:32,331 INFO L93 Difference]: Finished difference Result 266 states and 283 transitions. [2021-05-02 13:14:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 13:14:32,334 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 88 states have internal predecessors, (185), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-02 13:14:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:14:32,336 INFO L225 Difference]: With dead ends: 266 [2021-05-02 13:14:32,336 INFO L226 Difference]: Without dead ends: 221 [2021-05-02 13:14:32,338 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 20939.2ms TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2021-05-02 13:14:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-02 13:14:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-05-02 13:14:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 214 states have (on average 1.0420560747663552) internal successors, (223), 215 states have internal predecessors, (223), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:14:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2021-05-02 13:14:32,364 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 215 [2021-05-02 13:14:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:14:32,364 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2021-05-02 13:14:32,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 88 states have internal predecessors, (185), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:14:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2021-05-02 13:14:32,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 13:14:32,365 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:14:32,365 INFO L523 BasicCegarLoop]: trace histogram [91, 85, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:14:32,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 13:14:32,589 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:14:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:14:32,590 INFO L82 PathProgramCache]: Analyzing trace with hash 417655824, now seen corresponding path program 84 times [2021-05-02 13:14:32,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:14:32,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551184089] [2021-05-02 13:14:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:14:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:14:41,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:14:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:14:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 946 proven. 7310 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-05-02 13:14:41,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:14:41,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551184089] [2021-05-02 13:14:41,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551184089] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:14:41,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355725868] [2021-05-02 13:14:41,887 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 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 [2021-05-02 13:14:42,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 13:14:42,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:14:42,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 13:14:42,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:14:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:42,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:42,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:42,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:43,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:44,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:45,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:14:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 971 proven. 276 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2021-05-02 13:14:46,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355725868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:14:46,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:14:46,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 29] total 116 [2021-05-02 13:14:46,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256503024] [2021-05-02 13:14:46,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-02 13:14:46,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:14:46,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-02 13:14:46,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4235, Invalid=9105, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 13:14:46,807 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand has 116 states, 116 states have (on average 1.9224137931034482) internal successors, (223), 115 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:15:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:15:14,227 INFO L93 Difference]: Finished difference Result 311 states and 350 transitions. [2021-05-02 13:15:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-02 13:15:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.9224137931034482) internal successors, (223), 115 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-02 13:15:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:15:14,230 INFO L225 Difference]: With dead ends: 311 [2021-05-02 13:15:14,230 INFO L226 Difference]: Without dead ends: 266 [2021-05-02 13:15:14,233 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9612 ImplicationChecksByTransitivity, 37197.8ms TimeCoverageRelationStatistics Valid=16311, Invalid=35901, Unknown=0, NotChecked=0, Total=52212 [2021-05-02 13:15:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-02 13:15:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 224. [2021-05-02 13:15:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 217 states have (on average 1.0414746543778801) internal successors, (226), 218 states have internal predecessors, (226), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:15:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 232 transitions. [2021-05-02 13:15:14,257 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 232 transitions. Word has length 217 [2021-05-02 13:15:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:15:14,257 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 232 transitions. [2021-05-02 13:15:14,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 1.9224137931034482) internal successors, (223), 115 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:15:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 232 transitions. [2021-05-02 13:15:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-05-02 13:15:14,258 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:15:14,258 INFO L523 BasicCegarLoop]: trace histogram [92, 86, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:15:14,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:15:14,473 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:15:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:15:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash 919115734, now seen corresponding path program 85 times [2021-05-02 13:15:14,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:15:14,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646661268] [2021-05-02 13:15:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:15:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:15:21,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:15:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:15:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8764 backedges. 957 proven. 7482 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 13:15:21,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:15:21,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646661268] [2021-05-02 13:15:21,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646661268] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:15:21,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646790742] [2021-05-02 13:15:21,201 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 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 [2021-05-02 13:15:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:15:21,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 13:15:21,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:15:21,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8764 backedges. 957 proven. 7482 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 13:15:22,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646790742] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:15:22,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:15:22,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 13:15:22,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841590224] [2021-05-02 13:15:22,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 13:15:22,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:15:22,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 13:15:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 13:15:22,885 INFO L87 Difference]: Start difference. First operand 224 states and 232 transitions. Second operand has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:15:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:15:37,710 INFO L93 Difference]: Finished difference Result 272 states and 289 transitions. [2021-05-02 13:15:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 13:15:37,713 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 220 [2021-05-02 13:15:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:15:37,714 INFO L225 Difference]: With dead ends: 272 [2021-05-02 13:15:37,714 INFO L226 Difference]: Without dead ends: 226 [2021-05-02 13:15:37,716 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 20419.5ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 13:15:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-02 13:15:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-02 13:15:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.0410958904109588) internal successors, (228), 220 states have internal predecessors, (228), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:15:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 234 transitions. [2021-05-02 13:15:37,740 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 234 transitions. Word has length 220 [2021-05-02 13:15:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:15:37,740 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 234 transitions. [2021-05-02 13:15:37,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:15:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 234 transitions. [2021-05-02 13:15:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-05-02 13:15:37,741 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:15:37,741 INFO L523 BasicCegarLoop]: trace histogram [93, 87, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:15:37,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-02 13:15:37,954 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:15:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:15:37,955 INFO L82 PathProgramCache]: Analyzing trace with hash 657127705, now seen corresponding path program 86 times [2021-05-02 13:15:37,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:15:37,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793238909] [2021-05-02 13:15:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:15:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:15:47,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:15:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:15:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8949 backedges. 968 proven. 7656 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 13:15:47,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:15:47,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793238909] [2021-05-02 13:15:47,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793238909] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:15:47,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304919649] [2021-05-02 13:15:47,948 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 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 [2021-05-02 13:15:48,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:15:48,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:15:48,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 13:15:48,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:15:48,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:48,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:15:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8949 backedges. 968 proven. 7656 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 13:15:49,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304919649] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:15:49,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:15:49,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 13:15:49,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956581380] [2021-05-02 13:15:49,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 13:15:49,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:15:49,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 13:15:49,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 13:15:49,477 INFO L87 Difference]: Start difference. First operand 226 states and 234 transitions. Second operand has 92 states, 92 states have (on average 2.0760869565217392) internal successors, (191), 91 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:15:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:15:57,596 INFO L93 Difference]: Finished difference Result 274 states and 291 transitions. [2021-05-02 13:15:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 13:15:57,597 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0760869565217392) internal successors, (191), 91 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 222 [2021-05-02 13:15:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:15:57,598 INFO L225 Difference]: With dead ends: 274 [2021-05-02 13:15:57,598 INFO L226 Difference]: Without dead ends: 228 [2021-05-02 13:15:57,599 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4173 ImplicationChecksByTransitivity, 17432.9ms TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 13:15:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-05-02 13:15:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-05-02 13:15:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 1.0407239819004526) internal successors, (230), 222 states have internal predecessors, (230), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:15:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 236 transitions. [2021-05-02 13:15:57,623 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 236 transitions. Word has length 222 [2021-05-02 13:15:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:15:57,623 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 236 transitions. [2021-05-02 13:15:57,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0760869565217392) internal successors, (191), 91 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:15:57,623 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 236 transitions. [2021-05-02 13:15:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-05-02 13:15:57,624 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:15:57,624 INFO L523 BasicCegarLoop]: trace histogram [94, 88, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:15:57,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:15:57,837 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:15:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:15:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2005264996, now seen corresponding path program 87 times [2021-05-02 13:15:57,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:15:57,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619677202] [2021-05-02 13:15:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:15:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:16:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9136 backedges. 979 proven. 7832 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 13:16:01,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:16:01,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619677202] [2021-05-02 13:16:01,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619677202] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:01,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189619992] [2021-05-02 13:16:01,891 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 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 [2021-05-02 13:16:01,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-05-02 13:16:01,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:16:01,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 13:16:01,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:16:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:02,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9136 backedges. 1004 proven. 300 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2021-05-02 13:16:03,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189619992] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:03,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:16:03,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 30] total 120 [2021-05-02 13:16:03,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931028280] [2021-05-02 13:16:03,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states [2021-05-02 13:16:03,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:16:03,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-05-02 13:16:03,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4531, Invalid=9749, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 13:16:03,981 INFO L87 Difference]: Start difference. First operand 228 states and 236 transitions. Second operand has 120 states, 120 states have (on average 1.9166666666666667) internal successors, (230), 119 states have internal predecessors, (230), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:16:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:16:15,429 INFO L93 Difference]: Finished difference Result 319 states and 358 transitions. [2021-05-02 13:16:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-05-02 13:16:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.9166666666666667) internal successors, (230), 119 states have internal predecessors, (230), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224 [2021-05-02 13:16:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:16:15,431 INFO L225 Difference]: With dead ends: 319 [2021-05-02 13:16:15,431 INFO L226 Difference]: Without dead ends: 273 [2021-05-02 13:16:15,433 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10281 ImplicationChecksByTransitivity, 15631.8ms TimeCoverageRelationStatistics Valid=17503, Invalid=38429, Unknown=0, NotChecked=0, Total=55932 [2021-05-02 13:16:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-05-02 13:16:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 231. [2021-05-02 13:16:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 224 states have (on average 1.0401785714285714) internal successors, (233), 225 states have internal predecessors, (233), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:16:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 239 transitions. [2021-05-02 13:16:15,457 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 239 transitions. Word has length 224 [2021-05-02 13:16:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:16:15,457 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 239 transitions. [2021-05-02 13:16:15,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 120 states, 120 states have (on average 1.9166666666666667) internal successors, (230), 119 states have internal predecessors, (230), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:16:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 239 transitions. [2021-05-02 13:16:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 13:16:15,458 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:16:15,458 INFO L523 BasicCegarLoop]: trace histogram [95, 89, 25, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:16:15,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:16:15,673 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:16:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:16:15,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2116008548, now seen corresponding path program 88 times [2021-05-02 13:16:15,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:16:15,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64510155] [2021-05-02 13:16:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:16:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:19,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:16:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9350 backedges. 990 proven. 8010 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-05-02 13:16:19,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:16:19,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64510155] [2021-05-02 13:16:19,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64510155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:19,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190760980] [2021-05-02 13:16:19,836 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 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 [2021-05-02 13:16:19,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:16:19,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:16:19,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 13:16:19,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:16:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:19,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9350 backedges. 990 proven. 8010 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-05-02 13:16:20,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190760980] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:20,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:16:20,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 13:16:20,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526412423] [2021-05-02 13:16:20,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 13:16:20,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:16:20,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 13:16:20,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 13:16:20,620 INFO L87 Difference]: Start difference. First operand 231 states and 239 transitions. Second operand has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:16:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:16:28,274 INFO L93 Difference]: Finished difference Result 280 states and 297 transitions. [2021-05-02 13:16:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 13:16:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-05-02 13:16:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:16:28,275 INFO L225 Difference]: With dead ends: 280 [2021-05-02 13:16:28,275 INFO L226 Difference]: Without dead ends: 233 [2021-05-02 13:16:28,277 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 11245.3ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 13:16:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-05-02 13:16:28,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-05-02 13:16:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 226 states have (on average 1.0398230088495575) internal successors, (235), 227 states have internal predecessors, (235), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:16:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 241 transitions. [2021-05-02 13:16:28,300 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 241 transitions. Word has length 227 [2021-05-02 13:16:28,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:16:28,300 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 241 transitions. [2021-05-02 13:16:28,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:16:28,300 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 241 transitions. [2021-05-02 13:16:28,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 13:16:28,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:16:28,301 INFO L523 BasicCegarLoop]: trace histogram [96, 90, 25, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:16:28,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:16:28,517 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:16:28,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:16:28,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1030551489, now seen corresponding path program 89 times [2021-05-02 13:16:28,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:16:28,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573923229] [2021-05-02 13:16:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:16:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:33,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:16:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9541 backedges. 1001 proven. 8190 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-05-02 13:16:33,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:16:33,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573923229] [2021-05-02 13:16:33,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573923229] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:33,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334672936] [2021-05-02 13:16:33,311 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 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 [2021-05-02 13:16:33,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2021-05-02 13:16:33,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:16:33,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 13:16:33,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:16:33,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:33,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9541 backedges. 1001 proven. 8190 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-05-02 13:16:34,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334672936] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:34,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:16:34,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 95 [2021-05-02 13:16:34,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522507662] [2021-05-02 13:16:34,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 13:16:34,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:16:34,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 13:16:34,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 13:16:34,053 INFO L87 Difference]: Start difference. First operand 233 states and 241 transitions. Second operand has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:16:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:16:41,088 INFO L93 Difference]: Finished difference Result 282 states and 299 transitions. [2021-05-02 13:16:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 13:16:41,089 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-02 13:16:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:16:41,090 INFO L225 Difference]: With dead ends: 282 [2021-05-02 13:16:41,090 INFO L226 Difference]: Without dead ends: 235 [2021-05-02 13:16:41,091 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 11171.9ms TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 13:16:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-05-02 13:16:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-05-02 13:16:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 228 states have (on average 1.0394736842105263) internal successors, (237), 229 states have internal predecessors, (237), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:16:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 243 transitions. [2021-05-02 13:16:41,114 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 243 transitions. Word has length 229 [2021-05-02 13:16:41,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:16:41,114 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 243 transitions. [2021-05-02 13:16:41,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:16:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 243 transitions. [2021-05-02 13:16:41,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 13:16:41,115 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:16:41,115 INFO L523 BasicCegarLoop]: trace histogram [97, 91, 25, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:16:41,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:16:41,329 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:16:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:16:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1583370718, now seen corresponding path program 90 times [2021-05-02 13:16:41,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:16:41,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102688739] [2021-05-02 13:16:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:16:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:16:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:16:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9734 backedges. 1012 proven. 8372 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-05-02 13:16:45,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:16:45,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102688739] [2021-05-02 13:16:45,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102688739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:45,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031516040] [2021-05-02 13:16:45,437 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 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 [2021-05-02 13:16:45,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2021-05-02 13:16:45,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:16:45,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 13:16:45,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:16:45,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:45,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:45,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:45,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:16:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9734 backedges. 1037 proven. 325 refuted. 0 times theorem prover too weak. 8372 trivial. 0 not checked. [2021-05-02 13:16:47,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031516040] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:16:47,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:16:47,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 31] total 124 [2021-05-02 13:16:47,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081320962] [2021-05-02 13:16:47,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 124 states [2021-05-02 13:16:47,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:16:47,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-05-02 13:16:47,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4837, Invalid=10415, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 13:16:47,634 INFO L87 Difference]: Start difference. First operand 235 states and 243 transitions. Second operand has 124 states, 124 states have (on average 1.9112903225806452) internal successors, (237), 123 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:17:00,103 INFO L93 Difference]: Finished difference Result 327 states and 366 transitions. [2021-05-02 13:17:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-05-02 13:17:00,104 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 1.9112903225806452) internal successors, (237), 123 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-02 13:17:00,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:17:00,105 INFO L225 Difference]: With dead ends: 327 [2021-05-02 13:17:00,105 INFO L226 Difference]: Without dead ends: 280 [2021-05-02 13:17:00,106 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10972 ImplicationChecksByTransitivity, 16741.1ms TimeCoverageRelationStatistics Valid=18737, Invalid=41043, Unknown=0, NotChecked=0, Total=59780 [2021-05-02 13:17:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-02 13:17:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 238. [2021-05-02 13:17:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 231 states have (on average 1.0389610389610389) internal successors, (240), 232 states have internal predecessors, (240), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:17:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 246 transitions. [2021-05-02 13:17:00,131 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 246 transitions. Word has length 231 [2021-05-02 13:17:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:17:00,131 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 246 transitions. [2021-05-02 13:17:00,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 124 states, 124 states have (on average 1.9112903225806452) internal successors, (237), 123 states have internal predecessors, (237), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 246 transitions. [2021-05-02 13:17:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-05-02 13:17:00,132 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:17:00,132 INFO L523 BasicCegarLoop]: trace histogram [98, 92, 26, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:17:00,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 13:17:00,348 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:17:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:17:00,348 INFO L82 PathProgramCache]: Analyzing trace with hash -287462776, now seen corresponding path program 91 times [2021-05-02 13:17:00,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:17:00,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611206573] [2021-05-02 13:17:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:17:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:05,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:17:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9955 backedges. 1023 proven. 8556 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-05-02 13:17:05,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:17:05,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611206573] [2021-05-02 13:17:05,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611206573] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:05,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222123650] [2021-05-02 13:17:05,026 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 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 [2021-05-02 13:17:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:05,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 13:17:05,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:17:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9955 backedges. 1023 proven. 8556 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-05-02 13:17:05,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222123650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:05,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:17:05,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 13:17:05,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139489872] [2021-05-02 13:17:05,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 13:17:05,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:17:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 13:17:05,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 13:17:05,793 INFO L87 Difference]: Start difference. First operand 238 states and 246 transitions. Second operand has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:17:13,245 INFO L93 Difference]: Finished difference Result 288 states and 305 transitions. [2021-05-02 13:17:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 13:17:13,246 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 234 [2021-05-02 13:17:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:17:13,247 INFO L225 Difference]: With dead ends: 288 [2021-05-02 13:17:13,247 INFO L226 Difference]: Without dead ends: 240 [2021-05-02 13:17:13,248 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 11557.2ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 13:17:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-02 13:17:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-02 13:17:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 233 states have (on average 1.03862660944206) internal successors, (242), 234 states have internal predecessors, (242), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:17:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 248 transitions. [2021-05-02 13:17:13,274 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 248 transitions. Word has length 234 [2021-05-02 13:17:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:17:13,274 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 248 transitions. [2021-05-02 13:17:13,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 248 transitions. [2021-05-02 13:17:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-05-02 13:17:13,275 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:17:13,275 INFO L523 BasicCegarLoop]: trace histogram [99, 93, 26, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:17:13,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:17:13,491 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:17:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:17:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash 862919307, now seen corresponding path program 92 times [2021-05-02 13:17:13,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:17:13,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532749714] [2021-05-02 13:17:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:17:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:18,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:17:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10152 backedges. 1034 proven. 8742 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-05-02 13:17:18,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:17:18,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532749714] [2021-05-02 13:17:18,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532749714] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:18,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729487721] [2021-05-02 13:17:18,208 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 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 [2021-05-02 13:17:18,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:17:18,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:17:18,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 13:17:18,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:17:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10152 backedges. 1034 proven. 8742 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-05-02 13:17:18,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729487721] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:18,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:17:18,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 98 [2021-05-02 13:17:18,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957754346] [2021-05-02 13:17:18,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 13:17:18,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:17:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 13:17:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 13:17:18,960 INFO L87 Difference]: Start difference. First operand 240 states and 248 transitions. Second operand has 98 states, 98 states have (on average 2.0714285714285716) internal successors, (203), 97 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:17:27,098 INFO L93 Difference]: Finished difference Result 290 states and 307 transitions. [2021-05-02 13:17:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 13:17:27,099 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0714285714285716) internal successors, (203), 97 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 236 [2021-05-02 13:17:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:17:27,100 INFO L225 Difference]: With dead ends: 290 [2021-05-02 13:17:27,100 INFO L226 Difference]: Without dead ends: 242 [2021-05-02 13:17:27,101 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 12069.2ms TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 13:17:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-02 13:17:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-02 13:17:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 235 states have (on average 1.0382978723404255) internal successors, (244), 236 states have internal predecessors, (244), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:17:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2021-05-02 13:17:27,126 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 236 [2021-05-02 13:17:27,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:17:27,127 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2021-05-02 13:17:27,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.0714285714285716) internal successors, (203), 97 states have internal predecessors, (203), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2021-05-02 13:17:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-05-02 13:17:27,127 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:17:27,127 INFO L523 BasicCegarLoop]: trace histogram [100, 94, 26, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:17:27,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 13:17:27,337 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:17:27,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:17:27,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1721461298, now seen corresponding path program 93 times [2021-05-02 13:17:27,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:17:27,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478815856] [2021-05-02 13:17:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:17:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:32,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:17:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10351 backedges. 1045 proven. 8930 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-05-02 13:17:32,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:17:32,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478815856] [2021-05-02 13:17:32,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478815856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:32,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972561964] [2021-05-02 13:17:32,923 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 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 [2021-05-02 13:17:32,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 13:17:32,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:17:32,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 13:17:33,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:17:33,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:33,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:34,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:34,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:34,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:34,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10351 backedges. 1222 proven. 36 refuted. 0 times theorem prover too weak. 9093 trivial. 0 not checked. [2021-05-02 13:17:34,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972561964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:34,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:17:34,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 9] total 105 [2021-05-02 13:17:34,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864729944] [2021-05-02 13:17:34,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 13:17:34,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:17:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 13:17:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 13:17:34,306 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand has 105 states, 105 states have (on average 2.085714285714286) internal successors, (219), 104 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:17:44,817 INFO L93 Difference]: Finished difference Result 295 states and 315 transitions. [2021-05-02 13:17:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 13:17:44,818 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.085714285714286) internal successors, (219), 104 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 238 [2021-05-02 13:17:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:17:44,819 INFO L225 Difference]: With dead ends: 295 [2021-05-02 13:17:44,819 INFO L226 Difference]: Without dead ends: 247 [2021-05-02 13:17:44,821 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5245 ImplicationChecksByTransitivity, 16093.0ms TimeCoverageRelationStatistics Valid=16068, Invalid=26574, Unknown=0, NotChecked=0, Total=42642 [2021-05-02 13:17:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-02 13:17:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-02 13:17:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 239 states have (on average 1.0418410041841004) internal successors, (249), 240 states have internal predecessors, (249), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:17:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 255 transitions. [2021-05-02 13:17:44,847 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 255 transitions. Word has length 238 [2021-05-02 13:17:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:17:44,847 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 255 transitions. [2021-05-02 13:17:44,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.085714285714286) internal successors, (219), 104 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:17:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 255 transitions. [2021-05-02 13:17:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-05-02 13:17:44,848 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:17:44,848 INFO L523 BasicCegarLoop]: trace histogram [102, 95, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:17:45,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:17:45,063 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:17:45,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:17:45,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1181093098, now seen corresponding path program 94 times [2021-05-02 13:17:45,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:17:45,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662533503] [2021-05-02 13:17:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:17:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:17:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:17:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10755 backedges. 1248 proven. 9120 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-05-02 13:17:49,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:17:49,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662533503] [2021-05-02 13:17:49,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662533503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:49,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247942925] [2021-05-02 13:17:49,946 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 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 [2021-05-02 13:17:50,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:17:50,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:17:50,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 13:17:50,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:17:50,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:17:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10755 backedges. 1248 proven. 9120 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-05-02 13:17:50,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247942925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:17:50,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:17:50,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 13:17:50,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519416413] [2021-05-02 13:17:50,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 13:17:50,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:17:50,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 13:17:50,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 13:17:50,704 INFO L87 Difference]: Start difference. First operand 246 states and 255 transitions. Second operand has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:18:00,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:18:00,141 INFO L93 Difference]: Finished difference Result 298 states and 317 transitions. [2021-05-02 13:18:00,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 13:18:00,142 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 242 [2021-05-02 13:18:00,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:18:00,143 INFO L225 Difference]: With dead ends: 298 [2021-05-02 13:18:00,143 INFO L226 Difference]: Without dead ends: 248 [2021-05-02 13:18:00,145 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 13450.4ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 13:18:00,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-02 13:18:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-02 13:18:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 241 states have (on average 1.04149377593361) internal successors, (251), 242 states have internal predecessors, (251), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:18:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 257 transitions. [2021-05-02 13:18:00,196 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 257 transitions. Word has length 242 [2021-05-02 13:18:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:18:00,196 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 257 transitions. [2021-05-02 13:18:00,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:18:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 257 transitions. [2021-05-02 13:18:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-05-02 13:18:00,205 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:18:00,206 INFO L523 BasicCegarLoop]: trace histogram [103, 96, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:18:00,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:18:00,420 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:18:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:18:00,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1970753511, now seen corresponding path program 95 times [2021-05-02 13:18:00,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:18:00,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167336837] [2021-05-02 13:18:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:18:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:18:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:18:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:18:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10960 backedges. 1261 proven. 9312 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-05-02 13:18:05,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:18:05,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167336837] [2021-05-02 13:18:05,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167336837] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:18:05,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950166399] [2021-05-02 13:18:05,735 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 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 [2021-05-02 13:18:05,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 104 check-sat command(s) [2021-05-02 13:18:05,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:18:05,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 13:18:05,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:18:05,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:05,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 10960 backedges. 1261 proven. 9312 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-05-02 13:18:06,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950166399] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:18:06,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:18:06,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 101 [2021-05-02 13:18:06,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499099998] [2021-05-02 13:18:06,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 13:18:06,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:18:06,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 13:18:06,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 13:18:06,663 INFO L87 Difference]: Start difference. First operand 248 states and 257 transitions. Second operand has 101 states, 101 states have (on average 2.0693069306930694) internal successors, (209), 100 states have internal predecessors, (209), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:18:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:18:16,032 INFO L93 Difference]: Finished difference Result 300 states and 319 transitions. [2021-05-02 13:18:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 13:18:16,033 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0693069306930694) internal successors, (209), 100 states have internal predecessors, (209), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 244 [2021-05-02 13:18:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:18:16,034 INFO L225 Difference]: With dead ends: 300 [2021-05-02 13:18:16,034 INFO L226 Difference]: Without dead ends: 250 [2021-05-02 13:18:16,036 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5037 ImplicationChecksByTransitivity, 13786.8ms TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 13:18:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-02 13:18:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-02 13:18:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 243 states have (on average 1.0411522633744856) internal successors, (253), 244 states have internal predecessors, (253), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:18:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 259 transitions. [2021-05-02 13:18:16,062 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 259 transitions. Word has length 244 [2021-05-02 13:18:16,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:18:16,063 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 259 transitions. [2021-05-02 13:18:16,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.0693069306930694) internal successors, (209), 100 states have internal predecessors, (209), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:18:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 259 transitions. [2021-05-02 13:18:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-05-02 13:18:16,082 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:18:16,082 INFO L523 BasicCegarLoop]: trace histogram [104, 97, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:18:16,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 13:18:16,283 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:18:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:18:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash -625199012, now seen corresponding path program 96 times [2021-05-02 13:18:16,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:18:16,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436605006] [2021-05-02 13:18:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:18:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:18:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:18:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:18:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11167 backedges. 1274 proven. 9506 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-05-02 13:18:22,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:18:22,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436605006] [2021-05-02 13:18:22,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436605006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:18:22,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718593830] [2021-05-02 13:18:22,370 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 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 [2021-05-02 13:18:22,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2021-05-02 13:18:22,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:18:22,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 13:18:22,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:18:22,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:22,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:22,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:22,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:23,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:24,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11167 backedges. 1310 proven. 351 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-05-02 13:18:25,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718593830] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:18:25,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:18:25,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 33] total 132 [2021-05-02 13:18:25,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903605101] [2021-05-02 13:18:25,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 132 states [2021-05-02 13:18:25,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:18:25,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-05-02 13:18:25,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5479, Invalid=11813, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 13:18:25,948 INFO L87 Difference]: Start difference. First operand 250 states and 259 transitions. Second operand has 132 states, 132 states have (on average 1.9090909090909092) internal successors, (252), 131 states have internal predecessors, (252), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:18:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:18:45,913 INFO L93 Difference]: Finished difference Result 359 states and 407 transitions. [2021-05-02 13:18:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-05-02 13:18:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.9090909090909092) internal successors, (252), 131 states have internal predecessors, (252), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 246 [2021-05-02 13:18:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:18:45,915 INFO L225 Difference]: With dead ends: 359 [2021-05-02 13:18:45,916 INFO L226 Difference]: Without dead ends: 309 [2021-05-02 13:18:45,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12585 ImplicationChecksByTransitivity, 26454.4ms TimeCoverageRelationStatistics Valid=21135, Invalid=46725, Unknown=0, NotChecked=0, Total=67860 [2021-05-02 13:18:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-05-02 13:18:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 253. [2021-05-02 13:18:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 246 states have (on average 1.0406504065040652) internal successors, (256), 247 states have internal predecessors, (256), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:18:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 262 transitions. [2021-05-02 13:18:45,946 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 262 transitions. Word has length 246 [2021-05-02 13:18:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:18:45,946 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 262 transitions. [2021-05-02 13:18:45,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 132 states, 132 states have (on average 1.9090909090909092) internal successors, (252), 131 states have internal predecessors, (252), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:18:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 262 transitions. [2021-05-02 13:18:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-02 13:18:45,947 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:18:45,947 INFO L523 BasicCegarLoop]: trace histogram [105, 98, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:18:46,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 13:18:46,161 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:18:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:18:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1682379804, now seen corresponding path program 97 times [2021-05-02 13:18:46,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:18:46,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892942769] [2021-05-02 13:18:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:18:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:18:54,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:18:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:18:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11403 backedges. 1287 proven. 9702 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-05-02 13:18:54,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:18:54,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892942769] [2021-05-02 13:18:54,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892942769] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:18:54,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980686624] [2021-05-02 13:18:54,036 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 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 [2021-05-02 13:18:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:18:54,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 13:18:54,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:18:54,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:54,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:18:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11403 backedges. 1287 proven. 9702 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-05-02 13:18:55,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980686624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:18:55,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:18:55,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 13:18:55,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357967353] [2021-05-02 13:18:55,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 13:18:55,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:18:55,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 13:18:55,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 13:18:55,245 INFO L87 Difference]: Start difference. First operand 253 states and 262 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:04,947 INFO L93 Difference]: Finished difference Result 306 states and 325 transitions. [2021-05-02 13:19:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 13:19:04,948 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249 [2021-05-02 13:19:04,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:04,949 INFO L225 Difference]: With dead ends: 306 [2021-05-02 13:19:04,949 INFO L226 Difference]: Without dead ends: 255 [2021-05-02 13:19:04,950 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 16644.4ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 13:19:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-02 13:19:04,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-05-02 13:19:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 248 states have (on average 1.0403225806451613) internal successors, (258), 249 states have internal predecessors, (258), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:19:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 264 transitions. [2021-05-02 13:19:04,979 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 264 transitions. Word has length 249 [2021-05-02 13:19:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:04,979 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 264 transitions. [2021-05-02 13:19:04,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 264 transitions. [2021-05-02 13:19:04,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 13:19:04,980 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:04,980 INFO L523 BasicCegarLoop]: trace histogram [106, 99, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:05,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:05,197 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:05,197 INFO L82 PathProgramCache]: Analyzing trace with hash -120646271, now seen corresponding path program 98 times [2021-05-02 13:19:05,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:05,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828930614] [2021-05-02 13:19:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11614 backedges. 1300 proven. 9900 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-05-02 13:19:11,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:11,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828930614] [2021-05-02 13:19:11,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828930614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:11,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270266142] [2021-05-02 13:19:11,311 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 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 [2021-05-02 13:19:11,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:19:11,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:11,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 13:19:11,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:11,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:11,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11614 backedges. 1300 proven. 9900 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-05-02 13:19:12,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270266142] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:12,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:19:12,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 104 [2021-05-02 13:19:12,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252420300] [2021-05-02 13:19:12,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 13:19:12,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:12,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 13:19:12,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 13:19:12,781 INFO L87 Difference]: Start difference. First operand 255 states and 264 transitions. Second operand has 104 states, 104 states have (on average 2.0673076923076925) internal successors, (215), 103 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:23,388 INFO L93 Difference]: Finished difference Result 308 states and 327 transitions. [2021-05-02 13:19:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 13:19:23,389 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0673076923076925) internal successors, (215), 103 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251 [2021-05-02 13:19:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:23,389 INFO L225 Difference]: With dead ends: 308 [2021-05-02 13:19:23,389 INFO L226 Difference]: Without dead ends: 257 [2021-05-02 13:19:23,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 15857.6ms TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 13:19:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-05-02 13:19:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-05-02 13:19:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 250 states have (on average 1.04) internal successors, (260), 251 states have internal predecessors, (260), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:19:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 266 transitions. [2021-05-02 13:19:23,420 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 266 transitions. Word has length 251 [2021-05-02 13:19:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:23,420 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 266 transitions. [2021-05-02 13:19:23,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.0673076923076925) internal successors, (215), 103 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 266 transitions. [2021-05-02 13:19:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 13:19:23,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:23,421 INFO L523 BasicCegarLoop]: trace histogram [107, 100, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:23,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 13:19:23,626 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:23,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:23,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1761692638, now seen corresponding path program 99 times [2021-05-02 13:19:23,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:23,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862505684] [2021-05-02 13:19:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11827 backedges. 1313 proven. 10100 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-05-02 13:19:30,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:30,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862505684] [2021-05-02 13:19:30,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862505684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:30,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118459008] [2021-05-02 13:19:30,257 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 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 [2021-05-02 13:19:30,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-05-02 13:19:30,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:30,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 13:19:30,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:30,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:30,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:30,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:30,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:33,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:33,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:33,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:33,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:33,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:33,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11827 backedges. 1349 proven. 378 refuted. 0 times theorem prover too weak. 10100 trivial. 0 not checked. [2021-05-02 13:19:33,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118459008] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:33,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:19:33,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 34] total 136 [2021-05-02 13:19:33,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827935975] [2021-05-02 13:19:33,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 136 states [2021-05-02 13:19:33,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:33,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-05-02 13:19:33,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5815, Invalid=12545, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 13:19:33,352 INFO L87 Difference]: Start difference. First operand 257 states and 266 transitions. Second operand has 136 states, 136 states have (on average 1.9044117647058822) internal successors, (259), 135 states have internal predecessors, (259), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:51,037 INFO L93 Difference]: Finished difference Result 367 states and 415 transitions. [2021-05-02 13:19:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-05-02 13:19:51,038 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 1.9044117647058822) internal successors, (259), 135 states have internal predecessors, (259), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2021-05-02 13:19:51,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:51,039 INFO L225 Difference]: With dead ends: 367 [2021-05-02 13:19:51,039 INFO L226 Difference]: Without dead ends: 316 [2021-05-02 13:19:51,041 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13349 ImplicationChecksByTransitivity, 24829.1ms TimeCoverageRelationStatistics Valid=22489, Invalid=49603, Unknown=0, NotChecked=0, Total=72092 [2021-05-02 13:19:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-05-02 13:19:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 260. [2021-05-02 13:19:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 253 states have (on average 1.0395256916996047) internal successors, (263), 254 states have internal predecessors, (263), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:19:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 269 transitions. [2021-05-02 13:19:51,070 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 269 transitions. Word has length 253 [2021-05-02 13:19:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:51,070 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 269 transitions. [2021-05-02 13:19:51,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 136 states, 136 states have (on average 1.9044117647058822) internal successors, (259), 135 states have internal predecessors, (259), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 269 transitions. [2021-05-02 13:19:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-05-02 13:19:51,071 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:51,071 INFO L523 BasicCegarLoop]: trace histogram [108, 101, 28, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:51,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 13:19:51,287 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:51,287 INFO L82 PathProgramCache]: Analyzing trace with hash 477932616, now seen corresponding path program 100 times [2021-05-02 13:19:51,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:51,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2399134] [2021-05-02 13:19:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12070 backedges. 1326 proven. 10302 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 13:19:58,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:58,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2399134] [2021-05-02 13:19:58,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2399134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:58,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233748056] [2021-05-02 13:19:58,475 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 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 [2021-05-02 13:19:58,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 13:19:58,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:58,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 13:19:58,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:58,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:58,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:59,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12070 backedges. 1326 proven. 10302 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 13:20:00,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233748056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:00,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:20:00,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 13:20:00,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423041784] [2021-05-02 13:20:00,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 13:20:00,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:00,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 13:20:00,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 13:20:00,156 INFO L87 Difference]: Start difference. First operand 260 states and 269 transitions. Second operand has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:20:14,017 INFO L93 Difference]: Finished difference Result 314 states and 333 transitions. [2021-05-02 13:20:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 13:20:14,019 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 256 [2021-05-02 13:20:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:20:14,019 INFO L225 Difference]: With dead ends: 314 [2021-05-02 13:20:14,019 INFO L226 Difference]: Without dead ends: 262 [2021-05-02 13:20:14,021 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 19971.6ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 13:20:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-05-02 13:20:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-05-02 13:20:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 255 states have (on average 1.0392156862745099) internal successors, (265), 256 states have internal predecessors, (265), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:20:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 271 transitions. [2021-05-02 13:20:14,050 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 271 transitions. Word has length 256 [2021-05-02 13:20:14,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:20:14,051 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 271 transitions. [2021-05-02 13:20:14,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 271 transitions. [2021-05-02 13:20:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-05-02 13:20:14,051 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:20:14,052 INFO L523 BasicCegarLoop]: trace histogram [109, 102, 28, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:20:14,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 13:20:14,267 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:20:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:20:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1074862069, now seen corresponding path program 101 times [2021-05-02 13:20:14,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:20:14,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190927032] [2021-05-02 13:20:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:20:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:20:22,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:20:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:20:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12287 backedges. 1339 proven. 10506 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 13:20:22,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:20:22,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190927032] [2021-05-02 13:20:22,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190927032] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:22,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676698035] [2021-05-02 13:20:22,037 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 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 [2021-05-02 13:20:22,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 110 check-sat command(s) [2021-05-02 13:20:22,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:20:22,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 13:20:22,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:20:22,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:22,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12287 backedges. 1339 proven. 10506 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 13:20:23,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676698035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:23,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:20:23,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 107 [2021-05-02 13:20:23,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423701361] [2021-05-02 13:20:23,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 13:20:23,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:23,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 13:20:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 13:20:23,357 INFO L87 Difference]: Start difference. First operand 262 states and 271 transitions. Second operand has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:20:36,448 INFO L93 Difference]: Finished difference Result 316 states and 335 transitions. [2021-05-02 13:20:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-02 13:20:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 258 [2021-05-02 13:20:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:20:36,450 INFO L225 Difference]: With dead ends: 316 [2021-05-02 13:20:36,450 INFO L226 Difference]: Without dead ends: 264 [2021-05-02 13:20:36,452 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5658 ImplicationChecksByTransitivity, 19750.4ms TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2021-05-02 13:20:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-02 13:20:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-02 13:20:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 257 states have (on average 1.038910505836576) internal successors, (267), 258 states have internal predecessors, (267), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:20:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 273 transitions. [2021-05-02 13:20:36,483 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 273 transitions. Word has length 258 [2021-05-02 13:20:36,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:20:36,483 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 273 transitions. [2021-05-02 13:20:36,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:20:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 273 transitions. [2021-05-02 13:20:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-05-02 13:20:36,484 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:20:36,484 INFO L523 BasicCegarLoop]: trace histogram [110, 103, 28, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:20:36,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:20:36,700 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:20:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:20:36,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1338064654, now seen corresponding path program 102 times [2021-05-02 13:20:36,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:20:36,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287843341] [2021-05-02 13:20:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:20:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:20:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:20:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:20:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12506 backedges. 1352 proven. 10712 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 13:20:43,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:20:43,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287843341] [2021-05-02 13:20:43,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287843341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:43,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841332745] [2021-05-02 13:20:43,715 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 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 [2021-05-02 13:20:43,807 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2021-05-02 13:20:43,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:20:43,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 13:20:43,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:20:44,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:44,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:45,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:46,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:47,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:47,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:47,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:20:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12506 backedges. 1388 proven. 406 refuted. 0 times theorem prover too weak. 10712 trivial. 0 not checked. [2021-05-02 13:20:47,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841332745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:20:47,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:20:47,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 35] total 140 [2021-05-02 13:20:47,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394637796] [2021-05-02 13:20:47,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states [2021-05-02 13:20:47,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:20:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2021-05-02 13:20:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=13299, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 13:20:47,254 INFO L87 Difference]: Start difference. First operand 264 states and 273 transitions. Second operand has 140 states, 140 states have (on average 1.9) internal successors, (266), 139 states have internal predecessors, (266), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:05,967 INFO L93 Difference]: Finished difference Result 375 states and 423 transitions. [2021-05-02 13:21:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-05-02 13:21:05,968 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 1.9) internal successors, (266), 139 states have internal predecessors, (266), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 260 [2021-05-02 13:21:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:05,969 INFO L225 Difference]: With dead ends: 375 [2021-05-02 13:21:05,969 INFO L226 Difference]: Without dead ends: 323 [2021-05-02 13:21:05,971 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14135 ImplicationChecksByTransitivity, 26763.9ms TimeCoverageRelationStatistics Valid=23885, Invalid=52567, Unknown=0, NotChecked=0, Total=76452 [2021-05-02 13:21:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-05-02 13:21:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 267. [2021-05-02 13:21:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 260 states have (on average 1.0384615384615385) internal successors, (270), 261 states have internal predecessors, (270), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:21:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 276 transitions. [2021-05-02 13:21:06,003 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 276 transitions. Word has length 260 [2021-05-02 13:21:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:06,003 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 276 transitions. [2021-05-02 13:21:06,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 140 states, 140 states have (on average 1.9) internal successors, (266), 139 states have internal predecessors, (266), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 276 transitions. [2021-05-02 13:21:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 13:21:06,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:06,004 INFO L523 BasicCegarLoop]: trace histogram [111, 104, 29, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:06,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 13:21:06,216 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:06,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1492284594, now seen corresponding path program 103 times [2021-05-02 13:21:06,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:06,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803887112] [2021-05-02 13:21:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:21:13,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:21:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:21:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12756 backedges. 1365 proven. 10920 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-05-02 13:21:13,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:21:13,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803887112] [2021-05-02 13:21:13,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803887112] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:13,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784523105] [2021-05-02 13:21:13,832 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 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 [2021-05-02 13:21:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:21:13,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 13:21:13,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:21:13,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:13,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:13,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:13,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:13,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:13,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:13,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:21:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12756 backedges. 1365 proven. 10920 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-05-02 13:21:14,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784523105] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:21:14,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:21:14,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 13:21:14,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658863829] [2021-05-02 13:21:14,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 13:21:14,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:21:14,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 13:21:14,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 13:21:14,910 INFO L87 Difference]: Start difference. First operand 267 states and 276 transitions. Second operand has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:21:27,660 INFO L93 Difference]: Finished difference Result 322 states and 341 transitions. [2021-05-02 13:21:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 13:21:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263 [2021-05-02 13:21:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:21:27,662 INFO L225 Difference]: With dead ends: 322 [2021-05-02 13:21:27,662 INFO L226 Difference]: Without dead ends: 269 [2021-05-02 13:21:27,663 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 19261.2ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 13:21:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-05-02 13:21:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-05-02 13:21:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 262 states have (on average 1.0381679389312977) internal successors, (272), 263 states have internal predecessors, (272), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 13:21:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 278 transitions. [2021-05-02 13:21:27,695 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 278 transitions. Word has length 263 [2021-05-02 13:21:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:21:27,695 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 278 transitions. [2021-05-02 13:21:27,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:21:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 278 transitions. [2021-05-02 13:21:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-02 13:21:27,696 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:21:27,696 INFO L523 BasicCegarLoop]: trace histogram [112, 105, 29, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:21:27,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 13:21:27,901 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:21:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:21:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1461520271, now seen corresponding path program 104 times [2021-05-02 13:21:27,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:21:27,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835576854] [2021-05-02 13:21:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:21:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat