/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:35:06,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:35:06,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:35:06,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 12:35:06,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:35:06,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:35:06,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:35:06,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:35:06,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:35:06,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:35:06,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:35:06,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:35:06,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:35:06,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:35:06,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:35:06,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:35:06,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 12:35:06,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:35:06,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:35:06,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:35:06,230 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 12:35:06,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:35:06,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:35:06,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:35:06,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:35:06,278 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:35:06,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:35:06,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:35:06,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:35:06,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:35:06,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:35:06,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:35:06,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:35:06,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:35:06,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:35:06,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:35:06,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:35:06,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:35:06,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:35:06,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:35:06,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:35:06,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:35:06,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:35:06,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:35:06,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:35:06,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:35:06,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:35:06,544 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:35:06,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_2.i [2021-05-02 12:35:06,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4acb1fa8/b57c61aa704c48b3a26ee0fe7e97cd0f/FLAG75f9e46e6 [2021-05-02 12:35:06,953 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:35:06,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i [2021-05-02 12:35:06,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4acb1fa8/b57c61aa704c48b3a26ee0fe7e97cd0f/FLAG75f9e46e6 [2021-05-02 12:35:06,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4acb1fa8/b57c61aa704c48b3a26ee0fe7e97cd0f [2021-05-02 12:35:06,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:35:06,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:35:06,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:35:06,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:35:06,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:35:06,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:35:06" (1/1) ... [2021-05-02 12:35:06,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750c91ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:06, skipping insertion in model container [2021-05-02 12:35:06,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:35:06" (1/1) ... [2021-05-02 12:35:06,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:35:06,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:35:07,110 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i[891,904] [2021-05-02 12:35:07,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:35:07,124 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:35:07,132 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_2.i[891,904] [2021-05-02 12:35:07,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:35:07,144 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:35:07,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07 WrapperNode [2021-05-02 12:35:07,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:35:07,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:35:07,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:35:07,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:35:07,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (1/1) ... [2021-05-02 12:35:07,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (1/1) ... [2021-05-02 12:35:07,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (1/1) ... [2021-05-02 12:35:07,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (1/1) ... [2021-05-02 12:35:07,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (1/1) ... [2021-05-02 12:35:07,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (1/1) ... [2021-05-02 12:35:07,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (1/1) ... [2021-05-02 12:35:07,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:35:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:35:07,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:35:07,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:35:07,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (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 12:35:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:35:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:35:07,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:35:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:35:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:35:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:35:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:35:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:35:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 12:35:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 12:35:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:35:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:35:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:35:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:35:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:35:07,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:35:07,556 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:35:07,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:35:07 BoogieIcfgContainer [2021-05-02 12:35:07,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:35:07,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:35:07,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:35:07,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:35:07,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:35:06" (1/3) ... [2021-05-02 12:35:07,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a81960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:35:07, skipping insertion in model container [2021-05-02 12:35:07,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:35:07" (2/3) ... [2021-05-02 12:35:07,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a81960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:35:07, skipping insertion in model container [2021-05-02 12:35:07,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:35:07" (3/3) ... [2021-05-02 12:35:07,562 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_2.i [2021-05-02 12:35:07,565 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:35:07,567 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:35:07,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:35:07,625 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:35:07,625 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:35:07,625 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:35:07,625 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:35:07,625 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:35:07,625 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:35:07,625 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:35:07,625 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:35:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:35:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 12:35:07,665 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:07,665 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:07,665 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:07,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1305738320, now seen corresponding path program 1 times [2021-05-02 12:35:07,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:07,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650736202] [2021-05-02 12:35:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:07,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:07,889 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 12:35:07,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:07,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650736202] [2021-05-02 12:35:07,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650736202] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:35:07,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:35:07,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 12:35:07,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812335944] [2021-05-02 12:35:07,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 12:35:07,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:07,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 12:35:07,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 12:35:07,908 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 12:35:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:07,994 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-05-02 12:35:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 12:35:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2021-05-02 12:35:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:07,999 INFO L225 Difference]: With dead ends: 34 [2021-05-02 12:35:08,000 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 12:35:08,002 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:35:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 12:35:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-05-02 12:35:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 12:35:08,028 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-05-02 12:35:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:08,028 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 12:35:08,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 12:35:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 12:35:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 12:35:08,030 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:08,030 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:08,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:35:08,030 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:08,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1786070446, now seen corresponding path program 1 times [2021-05-02 12:35:08,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:08,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712609900] [2021-05-02 12:35:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:08,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:08,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712609900] [2021-05-02 12:35:08,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712609900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:08,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473018525] [2021-05-02 12:35:08,126 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 12:35:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:08,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 12:35:08,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:08,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:08,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:08,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473018525] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:08,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:08,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 12:35:08,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046608265] [2021-05-02 12:35:08,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 12:35:08,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:08,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 12:35:08,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 12:35:08,252 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 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 12:35:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:08,340 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-02 12:35:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 12:35:08,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 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 13 [2021-05-02 12:35:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:08,341 INFO L225 Difference]: With dead ends: 22 [2021-05-02 12:35:08,341 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 12:35:08,342 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 83.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:35:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 12:35:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-02 12:35:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 12:35:08,345 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-02 12:35:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:08,345 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 12:35:08,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 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 12:35:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 12:35:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 12:35:08,346 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:08,346 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:08,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 12:35:08,566 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:08,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:08,567 INFO L82 PathProgramCache]: Analyzing trace with hash -471224436, now seen corresponding path program 2 times [2021-05-02 12:35:08,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:08,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048387422] [2021-05-02 12:35:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:08,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:08,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:08,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048387422] [2021-05-02 12:35:08,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048387422] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:08,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933881809] [2021-05-02 12:35:08,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:08,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:08,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:08,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 12:35:08,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:08,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:08,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:08,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:08,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:08,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933881809] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:08,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:08,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 12:35:08,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24506054] [2021-05-02 12:35:08,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 12:35:08,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 12:35:08,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:35:08,812 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 12:35:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:08,905 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-05-02 12:35:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 12:35:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 12:35:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:08,906 INFO L225 Difference]: With dead ends: 24 [2021-05-02 12:35:08,906 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 12:35:08,907 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:35:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 12:35:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-02 12:35:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 12:35:08,910 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-02 12:35:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:08,910 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 12:35:08,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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 12:35:08,910 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 12:35:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 12:35:08,910 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:08,910 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:09,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:09,125 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:09,125 INFO L82 PathProgramCache]: Analyzing trace with hash -773121558, now seen corresponding path program 3 times [2021-05-02 12:35:09,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:09,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139945536] [2021-05-02 12:35:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:09,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:09,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139945536] [2021-05-02 12:35:09,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139945536] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:09,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567524075] [2021-05-02 12:35:09,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:09,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 12:35:09,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:09,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 12:35:09,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:09,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:09,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567524075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:09,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:09,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 12:35:09,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795256462] [2021-05-02 12:35:09,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:35:09,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:09,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:35:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:35:09,236 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 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 12:35:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:09,314 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-05-02 12:35:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:35:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 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 17 [2021-05-02 12:35:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:09,315 INFO L225 Difference]: With dead ends: 26 [2021-05-02 12:35:09,315 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 12:35:09,315 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:35:09,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 12:35:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-02 12:35:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:09,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-05-02 12:35:09,318 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2021-05-02 12:35:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:09,318 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-05-02 12:35:09,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 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 12:35:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-05-02 12:35:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 12:35:09,319 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:09,319 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:09,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:09,535 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1161520328, now seen corresponding path program 4 times [2021-05-02 12:35:09,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:09,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661500001] [2021-05-02 12:35:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:09,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:09,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661500001] [2021-05-02 12:35:09,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661500001] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:09,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882429963] [2021-05-02 12:35:09,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:09,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:09,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:09,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 12:35:09,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:09,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:09,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882429963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:09,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:09,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-05-02 12:35:09,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003305675] [2021-05-02 12:35:09,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 12:35:09,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:09,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 12:35:09,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 12:35:09,660 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 12:35:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:09,784 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-05-02 12:35:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:35:09,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 12:35:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:09,785 INFO L225 Difference]: With dead ends: 28 [2021-05-02 12:35:09,785 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 12:35:09,785 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:35:09,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 12:35:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-05-02 12:35:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-05-02 12:35:09,788 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2021-05-02 12:35:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:09,789 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-05-02 12:35:09,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 12:35:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-05-02 12:35:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 12:35:09,789 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:09,789 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:10,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:10,003 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:10,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:10,004 INFO L82 PathProgramCache]: Analyzing trace with hash 631533606, now seen corresponding path program 5 times [2021-05-02 12:35:10,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:10,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497833824] [2021-05-02 12:35:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:10,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:10,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497833824] [2021-05-02 12:35:10,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497833824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:10,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459347723] [2021-05-02 12:35:10,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:10,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 12:35:10,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:10,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 12:35:10,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:10,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:10,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459347723] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:10,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:10,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 12:35:10,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68578450] [2021-05-02 12:35:10,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 12:35:10,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:10,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 12:35:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:35:10,157 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 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 12:35:10,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:10,287 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-05-02 12:35:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:35:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 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 12:35:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:10,288 INFO L225 Difference]: With dead ends: 30 [2021-05-02 12:35:10,288 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 12:35:10,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 151.4ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:35:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 12:35:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-05-02 12:35:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-02 12:35:10,292 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2021-05-02 12:35:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:10,292 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-02 12:35:10,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 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 12:35:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-02 12:35:10,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 12:35:10,293 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:10,293 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:10,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 12:35:10,509 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1879565308, now seen corresponding path program 6 times [2021-05-02 12:35:10,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:10,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275158087] [2021-05-02 12:35:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:10,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:10,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275158087] [2021-05-02 12:35:10,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275158087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:10,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492090339] [2021-05-02 12:35:10,574 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:10,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 12:35:10,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:10,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 12:35:10,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:10,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:10,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492090339] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:10,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:10,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 12:35:10,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115836038] [2021-05-02 12:35:10,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 12:35:10,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 12:35:10,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:35:10,716 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 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 12:35:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:10,858 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-05-02 12:35:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:35:10,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 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 12:35:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:10,861 INFO L225 Difference]: With dead ends: 32 [2021-05-02 12:35:10,861 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 12:35:10,861 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 143.9ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:35:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 12:35:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-05-02 12:35:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-05-02 12:35:10,873 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2021-05-02 12:35:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:10,874 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-05-02 12:35:10,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 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 12:35:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-05-02 12:35:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 12:35:10,875 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:10,875 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:11,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:11,089 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1274001310, now seen corresponding path program 7 times [2021-05-02 12:35:11,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:11,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126404826] [2021-05-02 12:35:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:11,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:11,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:11,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126404826] [2021-05-02 12:35:11,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126404826] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:11,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844759837] [2021-05-02 12:35:11,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:11,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 12:35:11,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:11,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:11,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844759837] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:11,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:11,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 12:35:11,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213509723] [2021-05-02 12:35:11,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:35:11,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:11,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:35:11,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:35:11,345 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 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 12:35:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:11,491 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-05-02 12:35:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:35:11,491 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 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 25 [2021-05-02 12:35:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:11,492 INFO L225 Difference]: With dead ends: 34 [2021-05-02 12:35:11,492 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 12:35:11,492 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 185.0ms TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:35:11,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 12:35:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 12:35:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-05-02 12:35:11,495 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2021-05-02 12:35:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:11,495 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-05-02 12:35:11,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 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 12:35:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-05-02 12:35:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 12:35:11,496 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:11,496 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:11,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:11,714 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:11,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:11,715 INFO L82 PathProgramCache]: Analyzing trace with hash 852415808, now seen corresponding path program 8 times [2021-05-02 12:35:11,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:11,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676180112] [2021-05-02 12:35:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:11,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:11,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:11,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676180112] [2021-05-02 12:35:11,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676180112] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:11,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943314383] [2021-05-02 12:35:11,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:11,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:11,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:11,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:35:11,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:11,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:11,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943314383] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:11,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:11,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-05-02 12:35:11,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844571796] [2021-05-02 12:35:11,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 12:35:11,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:11,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 12:35:11,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 12:35:11,917 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 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 12:35:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:12,101 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-05-02 12:35:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 12:35:12,102 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 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 27 [2021-05-02 12:35:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:12,102 INFO L225 Difference]: With dead ends: 36 [2021-05-02 12:35:12,102 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 12:35:12,103 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 170.6ms TimeCoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:35:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 12:35:12,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-05-02 12:35:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-05-02 12:35:12,105 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2021-05-02 12:35:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:12,105 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-05-02 12:35:12,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 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 12:35:12,106 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-05-02 12:35:12,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 12:35:12,106 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:12,106 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:12,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 12:35:12,324 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:12,325 INFO L82 PathProgramCache]: Analyzing trace with hash -65166690, now seen corresponding path program 9 times [2021-05-02 12:35:12,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:12,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513098201] [2021-05-02 12:35:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:12,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:12,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513098201] [2021-05-02 12:35:12,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513098201] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:12,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240995730] [2021-05-02 12:35:12,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:12,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 12:35:12,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:12,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 12:35:12,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:12,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:12,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240995730] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:12,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:12,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-05-02 12:35:12,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419005972] [2021-05-02 12:35:12,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 12:35:12,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:12,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 12:35:12,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2021-05-02 12:35:12,565 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:12,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:12,828 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-05-02 12:35:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:35:12,828 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-05-02 12:35:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:12,829 INFO L225 Difference]: With dead ends: 38 [2021-05-02 12:35:12,829 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 12:35:12,829 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 285.0ms TimeCoverageRelationStatistics Valid=237, Invalid=413, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:35:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 12:35:12,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-05-02 12:35:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:12,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-02 12:35:12,833 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2021-05-02 12:35:12,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:12,833 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-02 12:35:12,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-02 12:35:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 12:35:12,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:12,834 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:13,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:13,053 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:13,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1393651588, now seen corresponding path program 10 times [2021-05-02 12:35:13,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:13,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241709465] [2021-05-02 12:35:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:13,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:13,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241709465] [2021-05-02 12:35:13,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241709465] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:13,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32625585] [2021-05-02 12:35:13,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:13,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:13,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:13,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 12:35:13,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:13,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32625585] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:13,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:13,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 12:35:13,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395414048] [2021-05-02 12:35:13,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 12:35:13,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:13,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 12:35:13,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 12:35:13,290 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 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 12:35:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:13,527 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-05-02 12:35:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 12:35:13,528 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 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 31 [2021-05-02 12:35:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:13,528 INFO L225 Difference]: With dead ends: 40 [2021-05-02 12:35:13,528 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 12:35:13,529 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 250.0ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:35:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 12:35:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-02 12:35:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-05-02 12:35:13,532 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2021-05-02 12:35:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:13,532 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-05-02 12:35:13,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 14 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 12:35:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-05-02 12:35:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 12:35:13,533 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:13,533 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:13,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:13,751 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:13,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1832615642, now seen corresponding path program 11 times [2021-05-02 12:35:13,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:13,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959195156] [2021-05-02 12:35:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:13,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:13,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959195156] [2021-05-02 12:35:13,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959195156] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:13,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903830710] [2021-05-02 12:35:13,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:13,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 12:35:13,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:13,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 12:35:13,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:13,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:13,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903830710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:13,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:13,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 12:35:13,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620180731] [2021-05-02 12:35:13,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:35:13,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:35:13,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:35:13,947 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 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 12:35:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:14,215 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-05-02 12:35:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:35:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 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 33 [2021-05-02 12:35:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:14,216 INFO L225 Difference]: With dead ends: 42 [2021-05-02 12:35:14,216 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 12:35:14,217 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 282.3ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:35:14,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 12:35:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-05-02 12:35:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-05-02 12:35:14,240 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2021-05-02 12:35:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:14,240 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-05-02 12:35:14,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 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 12:35:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-05-02 12:35:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 12:35:14,240 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:14,241 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:14,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 12:35:14,457 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:14,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1309035960, now seen corresponding path program 12 times [2021-05-02 12:35:14,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:14,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267727172] [2021-05-02 12:35:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:14,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:14,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267727172] [2021-05-02 12:35:14,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267727172] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:14,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832795026] [2021-05-02 12:35:14,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:14,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 12:35:14,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:14,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:35:14,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:14,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:14,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832795026] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:14,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:14,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2021-05-02 12:35:14,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061521572] [2021-05-02 12:35:14,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 12:35:14,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:14,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 12:35:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 12:35:14,736 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 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 12:35:15,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:15,016 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-05-02 12:35:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 12:35:15,017 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 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 12:35:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:15,017 INFO L225 Difference]: With dead ends: 44 [2021-05-02 12:35:15,017 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 12:35:15,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 337.3ms TimeCoverageRelationStatistics Valid=331, Invalid=539, Unknown=0, NotChecked=0, Total=870 [2021-05-02 12:35:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 12:35:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-05-02 12:35:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-05-02 12:35:15,021 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2021-05-02 12:35:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:15,021 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-05-02 12:35:15,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 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 12:35:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-05-02 12:35:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 12:35:15,022 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:15,022 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:15,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 12:35:15,237 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash 660135190, now seen corresponding path program 13 times [2021-05-02 12:35:15,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:15,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38674327] [2021-05-02 12:35:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:15,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:15,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:15,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38674327] [2021-05-02 12:35:15,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38674327] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:15,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378905153] [2021-05-02 12:35:15,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:15,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 12:35:15,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:15,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:15,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378905153] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:15,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:15,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 12:35:15,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222402782] [2021-05-02 12:35:15,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 12:35:15,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 12:35:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:35:15,473 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 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 12:35:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:15,808 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-05-02 12:35:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 12:35:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 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 37 [2021-05-02 12:35:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:15,808 INFO L225 Difference]: With dead ends: 46 [2021-05-02 12:35:15,808 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 12:35:15,809 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 367.0ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:35:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 12:35:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-05-02 12:35:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-05-02 12:35:15,812 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2021-05-02 12:35:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:15,812 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-05-02 12:35:15,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 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 12:35:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-05-02 12:35:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 12:35:15,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:15,813 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:16,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 12:35:16,028 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash -163246860, now seen corresponding path program 14 times [2021-05-02 12:35:16,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:16,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563990161] [2021-05-02 12:35:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:16,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:16,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:16,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563990161] [2021-05-02 12:35:16,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563990161] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:16,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368777988] [2021-05-02 12:35:16,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:16,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:16,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:16,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 12:35:16,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:16,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:16,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368777988] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:16,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:16,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 12:35:16,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733428790] [2021-05-02 12:35:16,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 12:35:16,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:16,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 12:35:16,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 12:35:16,295 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 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 12:35:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:16,644 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-05-02 12:35:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 12:35:16,644 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 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 39 [2021-05-02 12:35:16,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:16,645 INFO L225 Difference]: With dead ends: 48 [2021-05-02 12:35:16,645 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 12:35:16,645 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 385.4ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:35:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 12:35:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-02 12:35:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-05-02 12:35:16,649 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2021-05-02 12:35:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:16,649 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-05-02 12:35:16,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 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 12:35:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-05-02 12:35:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 12:35:16,649 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:16,649 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:16,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:16,865 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:16,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1159414446, now seen corresponding path program 15 times [2021-05-02 12:35:16,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:16,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260615520] [2021-05-02 12:35:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:17,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:17,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260615520] [2021-05-02 12:35:17,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260615520] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:17,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543935368] [2021-05-02 12:35:17,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:17,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 12:35:17,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:17,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 12:35:17,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:17,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:17,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543935368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:17,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:17,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-05-02 12:35:17,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629577839] [2021-05-02 12:35:17,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 12:35:17,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 12:35:17,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2021-05-02 12:35:17,142 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:17,651 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-05-02 12:35:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:35:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2021-05-02 12:35:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:17,651 INFO L225 Difference]: With dead ends: 50 [2021-05-02 12:35:17,651 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 12:35:17,652 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 558.5ms TimeCoverageRelationStatistics Valid=516, Invalid=890, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 12:35:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 12:35:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-02 12:35:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:17,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-05-02 12:35:17,655 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2021-05-02 12:35:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:17,655 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-05-02 12:35:17,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-05-02 12:35:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 12:35:17,656 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:17,656 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:17,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 12:35:17,872 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash -698757584, now seen corresponding path program 16 times [2021-05-02 12:35:17,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:17,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142019455] [2021-05-02 12:35:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:18,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:18,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142019455] [2021-05-02 12:35:18,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142019455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:18,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725970647] [2021-05-02 12:35:18,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:18,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:18,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:18,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 12:35:18,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:18,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725970647] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:18,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:18,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 12:35:18,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477566910] [2021-05-02 12:35:18,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 12:35:18,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:18,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 12:35:18,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 12:35:18,143 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 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 12:35:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:18,537 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-05-02 12:35:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 12:35:18,537 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 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 43 [2021-05-02 12:35:18,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:18,537 INFO L225 Difference]: With dead ends: 52 [2021-05-02 12:35:18,538 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 12:35:18,538 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 450.3ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 12:35:18,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 12:35:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-02 12:35:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-05-02 12:35:18,541 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2021-05-02 12:35:18,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:18,541 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-05-02 12:35:18,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 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 12:35:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-05-02 12:35:18,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 12:35:18,542 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:18,542 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:18,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 12:35:18,757 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:18,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:18,758 INFO L82 PathProgramCache]: Analyzing trace with hash -389144690, now seen corresponding path program 17 times [2021-05-02 12:35:18,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:18,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928379061] [2021-05-02 12:35:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:18,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:18,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928379061] [2021-05-02 12:35:18,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928379061] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:18,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816598910] [2021-05-02 12:35:18,944 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:18,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 12:35:18,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:18,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 12:35:18,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:19,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:19,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816598910] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:19,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:19,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 12:35:19,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917485946] [2021-05-02 12:35:19,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:35:19,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:19,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:35:19,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:35:19,068 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 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 12:35:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:19,506 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-05-02 12:35:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:35:19,506 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 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 45 [2021-05-02 12:35:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:19,506 INFO L225 Difference]: With dead ends: 54 [2021-05-02 12:35:19,506 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 12:35:19,507 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 499.2ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:35:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 12:35:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-05-02 12:35:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-05-02 12:35:19,510 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2021-05-02 12:35:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:19,510 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-05-02 12:35:19,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 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 12:35:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-05-02 12:35:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 12:35:19,511 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:19,511 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:19,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 12:35:19,726 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:19,727 INFO L82 PathProgramCache]: Analyzing trace with hash 796103020, now seen corresponding path program 18 times [2021-05-02 12:35:19,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:19,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413206670] [2021-05-02 12:35:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:19,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:19,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:19,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413206670] [2021-05-02 12:35:19,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413206670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:19,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612873300] [2021-05-02 12:35:19,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:19,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 12:35:19,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:19,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 12:35:19,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:19,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:19,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:20,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612873300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:20,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:20,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 23 [2021-05-02 12:35:20,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573309611] [2021-05-02 12:35:20,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 12:35:20,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:20,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 12:35:20,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 12:35:20,070 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (4), 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 12:35:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:20,541 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-05-02 12:35:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 12:35:20,542 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (4), 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 12:35:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:20,542 INFO L225 Difference]: With dead ends: 56 [2021-05-02 12:35:20,542 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 12:35:20,543 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 576.3ms TimeCoverageRelationStatistics Valid=652, Invalid=1070, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 12:35:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 12:35:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-05-02 12:35:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-05-02 12:35:20,547 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2021-05-02 12:35:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:20,547 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-05-02 12:35:20,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 2 states have call successors, (4), 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 12:35:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-05-02 12:35:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 12:35:20,548 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:20,548 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:20,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:20,763 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:20,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:20,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1652818890, now seen corresponding path program 19 times [2021-05-02 12:35:20,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:20,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43131589] [2021-05-02 12:35:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:20,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:20,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43131589] [2021-05-02 12:35:20,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43131589] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:20,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42466779] [2021-05-02 12:35:20,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:21,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 12:35:21,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:21,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:21,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42466779] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:21,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:21,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 12:35:21,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299880083] [2021-05-02 12:35:21,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 12:35:21,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:21,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 12:35:21,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:35:21,103 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 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 12:35:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:21,583 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-05-02 12:35:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 12:35:21,583 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 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 12:35:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:21,584 INFO L225 Difference]: With dead ends: 58 [2021-05-02 12:35:21,584 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 12:35:21,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 608.1ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:35:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 12:35:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-05-02 12:35:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-05-02 12:35:21,594 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2021-05-02 12:35:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:21,594 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-05-02 12:35:21,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 2 states have call successors, (4), 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 12:35:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-05-02 12:35:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 12:35:21,596 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:21,596 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:21,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:21,805 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:21,805 INFO L82 PathProgramCache]: Analyzing trace with hash 323049128, now seen corresponding path program 20 times [2021-05-02 12:35:21,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:21,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847467118] [2021-05-02 12:35:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:22,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:22,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:22,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847467118] [2021-05-02 12:35:22,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847467118] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:22,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478472285] [2021-05-02 12:35:22,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:22,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:22,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:22,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 12:35:22,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:22,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:22,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478472285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:22,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:22,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 12:35:22,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088775617] [2021-05-02 12:35:22,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 12:35:22,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:22,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 12:35:22,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 12:35:22,205 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 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 12:35:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:22,748 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-05-02 12:35:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 12:35:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 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 12:35:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:22,749 INFO L225 Difference]: With dead ends: 60 [2021-05-02 12:35:22,749 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 12:35:22,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 620.4ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:35:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 12:35:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 12:35:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-05-02 12:35:22,753 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2021-05-02 12:35:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:22,753 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-05-02 12:35:22,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 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 12:35:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-05-02 12:35:22,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 12:35:22,753 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:22,753 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:22,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 12:35:22,969 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:22,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:22,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1980405242, now seen corresponding path program 21 times [2021-05-02 12:35:22,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:22,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471135346] [2021-05-02 12:35:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:23,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:23,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471135346] [2021-05-02 12:35:23,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471135346] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:23,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919104964] [2021-05-02 12:35:23,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:23,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 12:35:23,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:23,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 12:35:23,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:23,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:23,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919104964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:23,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:23,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2021-05-02 12:35:23,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076671291] [2021-05-02 12:35:23,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 12:35:23,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:23,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 12:35:23,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:35:23,349 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 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 12:35:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:23,899 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-05-02 12:35:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 12:35:23,899 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 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 53 [2021-05-02 12:35:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:23,899 INFO L225 Difference]: With dead ends: 62 [2021-05-02 12:35:23,900 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 12:35:23,900 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 687.2ms TimeCoverageRelationStatistics Valid=853, Invalid=1403, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:35:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 12:35:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-05-02 12:35:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:23,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-05-02 12:35:23,903 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2021-05-02 12:35:23,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:23,903 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-05-02 12:35:23,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 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 12:35:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-05-02 12:35:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 12:35:23,903 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:23,904 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:24,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 12:35:24,119 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:24,119 INFO L82 PathProgramCache]: Analyzing trace with hash 603069924, now seen corresponding path program 22 times [2021-05-02 12:35:24,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:24,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143636347] [2021-05-02 12:35:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:24,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:24,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143636347] [2021-05-02 12:35:24,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143636347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:24,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763765416] [2021-05-02 12:35:24,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:24,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:24,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:24,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 12:35:24,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:24,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763765416] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:24,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:24,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-02 12:35:24,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476892778] [2021-05-02 12:35:24,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 12:35:24,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:24,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 12:35:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 12:35:24,541 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 2 states have call successors, (4), 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 12:35:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:25,156 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-05-02 12:35:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 12:35:25,156 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 2 states have call successors, (4), 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 12:35:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:25,157 INFO L225 Difference]: With dead ends: 64 [2021-05-02 12:35:25,157 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 12:35:25,157 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 762.2ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:35:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 12:35:25,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-05-02 12:35:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-05-02 12:35:25,160 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2021-05-02 12:35:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:25,160 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-05-02 12:35:25,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 2 states have call successors, (4), 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 12:35:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-05-02 12:35:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 12:35:25,161 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:25,161 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:25,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:25,376 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:25,376 INFO L82 PathProgramCache]: Analyzing trace with hash 831607362, now seen corresponding path program 23 times [2021-05-02 12:35:25,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:25,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158668128] [2021-05-02 12:35:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:25,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:25,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158668128] [2021-05-02 12:35:25,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158668128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:25,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547786377] [2021-05-02 12:35:25,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:25,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 12:35:25,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:25,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 12:35:25,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:25,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547786377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:25,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:25,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 12:35:25,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312406056] [2021-05-02 12:35:25,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:35:25,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:25,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:35:25,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:35:25,795 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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 12:35:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:26,415 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-05-02 12:35:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 12:35:26,415 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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 57 [2021-05-02 12:35:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:26,415 INFO L225 Difference]: With dead ends: 66 [2021-05-02 12:35:26,416 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 12:35:26,416 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 791.9ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:35:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 12:35:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-05-02 12:35:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-05-02 12:35:26,419 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2021-05-02 12:35:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:26,419 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-05-02 12:35:26,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 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 12:35:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-05-02 12:35:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 12:35:26,420 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:26,420 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:26,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 12:35:26,635 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1412753184, now seen corresponding path program 24 times [2021-05-02 12:35:26,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:26,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910918498] [2021-05-02 12:35:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:26,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:26,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910918498] [2021-05-02 12:35:26,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910918498] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:26,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310819014] [2021-05-02 12:35:26,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:26,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 12:35:26,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:26,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 12:35:26,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:27,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:27,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310819014] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:27,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:27,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 29 [2021-05-02 12:35:27,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46557455] [2021-05-02 12:35:27,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 12:35:27,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:27,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 12:35:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:35:27,090 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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 12:35:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:27,807 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-05-02 12:35:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 12:35:27,808 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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 59 [2021-05-02 12:35:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:27,808 INFO L225 Difference]: With dead ends: 68 [2021-05-02 12:35:27,808 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 12:35:27,809 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 853.6ms TimeCoverageRelationStatistics Valid=1081, Invalid=1781, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 12:35:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 12:35:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 12:35:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-05-02 12:35:27,812 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2021-05-02 12:35:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:27,812 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-05-02 12:35:27,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 28 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 12:35:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-05-02 12:35:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 12:35:27,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:27,813 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:28,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:28,014 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:28,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1548139646, now seen corresponding path program 25 times [2021-05-02 12:35:28,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:28,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573585562] [2021-05-02 12:35:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:28,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:28,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:28,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573585562] [2021-05-02 12:35:28,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573585562] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:28,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580065067] [2021-05-02 12:35:28,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:28,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 12:35:28,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:28,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:28,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580065067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:28,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:28,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 12:35:28,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429325060] [2021-05-02 12:35:28,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 12:35:28,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:28,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 12:35:28,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 12:35:28,467 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 2 states have call successors, (4), 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 12:35:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:29,217 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-05-02 12:35:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 12:35:29,217 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 2 states have call successors, (4), 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 61 [2021-05-02 12:35:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:29,218 INFO L225 Difference]: With dead ends: 70 [2021-05-02 12:35:29,218 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 12:35:29,219 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 921.4ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:35:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 12:35:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-05-02 12:35:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-05-02 12:35:29,221 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2021-05-02 12:35:29,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:29,222 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-05-02 12:35:29,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 states have internal predecessors, (61), 2 states have call successors, (4), 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 12:35:29,222 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-05-02 12:35:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 12:35:29,222 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:29,222 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:29,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 12:35:29,437 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1489456548, now seen corresponding path program 26 times [2021-05-02 12:35:29,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:29,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154100230] [2021-05-02 12:35:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:29,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:29,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154100230] [2021-05-02 12:35:29,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154100230] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:29,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622335100] [2021-05-02 12:35:29,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:29,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:29,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:29,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 12:35:29,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:29,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:29,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622335100] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:29,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:29,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 12:35:29,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252895761] [2021-05-02 12:35:29,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 12:35:29,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:29,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 12:35:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 12:35:29,954 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 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 12:35:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:30,722 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-05-02 12:35:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 12:35:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 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 63 [2021-05-02 12:35:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:30,724 INFO L225 Difference]: With dead ends: 72 [2021-05-02 12:35:30,724 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 12:35:30,724 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 973.8ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:35:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 12:35:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-05-02 12:35:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-05-02 12:35:30,727 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2021-05-02 12:35:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:30,728 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-05-02 12:35:30,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 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 12:35:30,728 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-05-02 12:35:30,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 12:35:30,728 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:30,728 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:30,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 12:35:30,943 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -41637702, now seen corresponding path program 27 times [2021-05-02 12:35:30,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:30,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180625998] [2021-05-02 12:35:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:31,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:31,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:31,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180625998] [2021-05-02 12:35:31,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180625998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:31,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738768143] [2021-05-02 12:35:31,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:31,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 12:35:31,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:31,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 12:35:31,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:31,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738768143] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:31,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:31,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-05-02 12:35:31,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596043707] [2021-05-02 12:35:31,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 12:35:31,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:31,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 12:35:31,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 12:35:31,476 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:32,487 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-05-02 12:35:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:35:32,487 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2021-05-02 12:35:32,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:32,488 INFO L225 Difference]: With dead ends: 74 [2021-05-02 12:35:32,488 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 12:35:32,489 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1205.1ms TimeCoverageRelationStatistics Valid=1398, Invalid=2384, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 12:35:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 12:35:32,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-02 12:35:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-05-02 12:35:32,492 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2021-05-02 12:35:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:32,492 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-05-02 12:35:32,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 32 states have internal predecessors, (66), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-05-02 12:35:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 12:35:32,492 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:32,492 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:32,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 12:35:32,708 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:32,708 INFO L82 PathProgramCache]: Analyzing trace with hash -257130600, now seen corresponding path program 28 times [2021-05-02 12:35:32,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:32,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604218850] [2021-05-02 12:35:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:33,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:33,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:33,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604218850] [2021-05-02 12:35:33,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604218850] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:33,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136858223] [2021-05-02 12:35:33,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:33,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:33,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:33,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 12:35:33,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:33,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:33,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136858223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:33,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:33,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-02 12:35:33,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650116374] [2021-05-02 12:35:33,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 12:35:33,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:33,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 12:35:33,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 12:35:33,235 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 2 states have call successors, (4), 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 12:35:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:34,128 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-05-02 12:35:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 12:35:34,128 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 2 states have call successors, (4), 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 67 [2021-05-02 12:35:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:34,129 INFO L225 Difference]: With dead ends: 76 [2021-05-02 12:35:34,129 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 12:35:34,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1126.6ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 12:35:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 12:35:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 12:35:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-05-02 12:35:34,132 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2021-05-02 12:35:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:34,133 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-05-02 12:35:34,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 32 states have internal predecessors, (67), 2 states have call successors, (4), 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 12:35:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-05-02 12:35:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 12:35:34,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:34,133 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:34,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 12:35:34,348 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:34,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1187375370, now seen corresponding path program 29 times [2021-05-02 12:35:34,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:34,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331630672] [2021-05-02 12:35:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:34,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:34,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331630672] [2021-05-02 12:35:34,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331630672] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:34,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555669949] [2021-05-02 12:35:34,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:34,818 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 12:35:34,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:34,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 12:35:34,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:34,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:34,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555669949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:34,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:34,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 12:35:34,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585462560] [2021-05-02 12:35:34,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 12:35:34,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:34,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 12:35:34,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:35:34,927 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 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 12:35:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:35,873 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-05-02 12:35:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:35:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 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 69 [2021-05-02 12:35:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:35,874 INFO L225 Difference]: With dead ends: 78 [2021-05-02 12:35:35,874 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 12:35:35,875 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1188.7ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:35:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 12:35:35,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-05-02 12:35:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-05-02 12:35:35,878 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2021-05-02 12:35:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:35,878 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-05-02 12:35:35,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 33 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 12:35:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-05-02 12:35:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 12:35:35,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:35,879 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:36,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:36,094 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1799401772, now seen corresponding path program 30 times [2021-05-02 12:35:36,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:36,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177667216] [2021-05-02 12:35:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:36,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:36,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177667216] [2021-05-02 12:35:36,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177667216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:36,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681205294] [2021-05-02 12:35:36,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:36,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 12:35:36,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:36,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 12:35:36,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:36,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:36,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681205294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:36,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:36,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35 [2021-05-02 12:35:36,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498336480] [2021-05-02 12:35:36,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 12:35:36,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 12:35:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 12:35:36,712 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 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 12:35:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:37,530 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-05-02 12:35:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 12:35:37,531 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 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 71 [2021-05-02 12:35:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:37,531 INFO L225 Difference]: With dead ends: 80 [2021-05-02 12:35:37,531 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 12:35:37,533 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1092.4ms TimeCoverageRelationStatistics Valid=1618, Invalid=2672, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:35:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 12:35:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-05-02 12:35:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-05-02 12:35:37,536 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2021-05-02 12:35:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:37,537 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-05-02 12:35:37,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 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 12:35:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-05-02 12:35:37,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 12:35:37,537 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:37,537 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:37,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:37,753 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1546254542, now seen corresponding path program 31 times [2021-05-02 12:35:37,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:37,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247157324] [2021-05-02 12:35:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:38,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:38,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:38,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247157324] [2021-05-02 12:35:38,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247157324] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:38,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286899124] [2021-05-02 12:35:38,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:38,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 12:35:38,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:38,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:38,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286899124] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:38,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:38,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 12:35:38,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378212419] [2021-05-02 12:35:38,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 12:35:38,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:38,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 12:35:38,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:35:38,324 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 35 states have internal predecessors, (73), 2 states have call successors, (4), 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 12:35:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:39,362 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-05-02 12:35:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 12:35:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 35 states have internal predecessors, (73), 2 states have call successors, (4), 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 12:35:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:39,363 INFO L225 Difference]: With dead ends: 82 [2021-05-02 12:35:39,363 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 12:35:39,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1280.9ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:35:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 12:35:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-05-02 12:35:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-05-02 12:35:39,367 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2021-05-02 12:35:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:39,367 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-05-02 12:35:39,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 35 states have internal predecessors, (73), 2 states have call successors, (4), 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 12:35:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-05-02 12:35:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 12:35:39,368 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:39,368 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:39,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:39,581 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1210064912, now seen corresponding path program 32 times [2021-05-02 12:35:39,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:39,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155895418] [2021-05-02 12:35:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:40,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:40,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155895418] [2021-05-02 12:35:40,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155895418] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:40,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93151619] [2021-05-02 12:35:40,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:40,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:40,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:40,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 12:35:40,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:40,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:40,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93151619] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:40,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:40,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 12:35:40,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570967130] [2021-05-02 12:35:40,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 12:35:40,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:40,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 12:35:40,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 12:35:40,237 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 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 12:35:41,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:41,292 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-05-02 12:35:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 12:35:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 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 75 [2021-05-02 12:35:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:41,293 INFO L225 Difference]: With dead ends: 84 [2021-05-02 12:35:41,293 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 12:35:41,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1404.9ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:35:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 12:35:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 12:35:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-05-02 12:35:41,297 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2021-05-02 12:35:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:41,297 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-05-02 12:35:41,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 36 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 12:35:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-05-02 12:35:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 12:35:41,297 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:41,297 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:41,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 12:35:41,511 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash 38238574, now seen corresponding path program 33 times [2021-05-02 12:35:41,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:41,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669947258] [2021-05-02 12:35:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:42,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:42,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669947258] [2021-05-02 12:35:42,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669947258] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:42,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064130256] [2021-05-02 12:35:42,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:42,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 12:35:42,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:42,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 12:35:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:42,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:42,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064130256] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:42,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:42,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-05-02 12:35:42,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661974945] [2021-05-02 12:35:42,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 12:35:42,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 12:35:42,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=812, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 12:35:42,241 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:43,550 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-05-02 12:35:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 12:35:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2021-05-02 12:35:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:43,551 INFO L225 Difference]: With dead ends: 86 [2021-05-02 12:35:43,551 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 12:35:43,551 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1693.5ms TimeCoverageRelationStatistics Valid=2001, Invalid=3401, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 12:35:43,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 12:35:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-05-02 12:35:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-05-02 12:35:43,554 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2021-05-02 12:35:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:43,555 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-05-02 12:35:43,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 38 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-05-02 12:35:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 12:35:43,555 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:43,555 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:43,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:43,764 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:43,764 INFO L82 PathProgramCache]: Analyzing trace with hash -805440692, now seen corresponding path program 34 times [2021-05-02 12:35:43,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:43,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133240844] [2021-05-02 12:35:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:44,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:44,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133240844] [2021-05-02 12:35:44,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133240844] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:44,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483032212] [2021-05-02 12:35:44,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:44,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:44,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:44,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 12:35:44,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:44,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:44,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483032212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:44,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:44,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-02 12:35:44,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379409821] [2021-05-02 12:35:44,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 12:35:44,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 12:35:44,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 12:35:44,532 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 38 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 12:35:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:45,710 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-05-02 12:35:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 12:35:45,711 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 38 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 79 [2021-05-02 12:35:45,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:45,711 INFO L225 Difference]: With dead ends: 88 [2021-05-02 12:35:45,711 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 12:35:45,712 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1580.7ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 12:35:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 12:35:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-05-02 12:35:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-05-02 12:35:45,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2021-05-02 12:35:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:45,724 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-05-02 12:35:45,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 38 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 12:35:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-05-02 12:35:45,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 12:35:45,725 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:45,725 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:45,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 12:35:45,940 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:45,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:45,941 INFO L82 PathProgramCache]: Analyzing trace with hash 167603626, now seen corresponding path program 35 times [2021-05-02 12:35:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:45,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350344668] [2021-05-02 12:35:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:46,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:46,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350344668] [2021-05-02 12:35:46,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350344668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:46,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896809122] [2021-05-02 12:35:46,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:46,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 12:35:46,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:46,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 12:35:46,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:46,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:46,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896809122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:46,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:46,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 12:35:46,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76612376] [2021-05-02 12:35:46,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 12:35:46,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:46,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 12:35:46,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:35:46,683 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 40 states, 40 states have (on average 2.025) internal successors, (81), 39 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 12:35:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:47,955 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2021-05-02 12:35:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 12:35:47,955 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 39 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 81 [2021-05-02 12:35:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:47,956 INFO L225 Difference]: With dead ends: 90 [2021-05-02 12:35:47,956 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 12:35:47,956 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1650.9ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:35:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 12:35:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-05-02 12:35:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2021-05-02 12:35:47,960 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2021-05-02 12:35:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:47,960 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2021-05-02 12:35:47,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 39 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 12:35:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2021-05-02 12:35:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 12:35:47,960 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:47,960 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:48,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:48,169 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:48,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:48,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1039677304, now seen corresponding path program 36 times [2021-05-02 12:35:48,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:48,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447964411] [2021-05-02 12:35:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:48,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:48,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447964411] [2021-05-02 12:35:48,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447964411] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:48,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983964898] [2021-05-02 12:35:48,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:48,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 12:35:48,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:48,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 12:35:48,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:48,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:48,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:49,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:49,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:49,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:49,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:49,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983964898] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:49,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:49,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 41 [2021-05-02 12:35:49,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602429311] [2021-05-02 12:35:49,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 12:35:49,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:49,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 12:35:49,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 12:35:49,011 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 40 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 12:35:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:50,349 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-05-02 12:35:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 12:35:50,350 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 40 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 83 [2021-05-02 12:35:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:50,350 INFO L225 Difference]: With dead ends: 92 [2021-05-02 12:35:50,350 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 12:35:50,351 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1760.7ms TimeCoverageRelationStatistics Valid=2263, Invalid=3743, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 12:35:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 12:35:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 12:35:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-05-02 12:35:50,354 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2021-05-02 12:35:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:50,354 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-05-02 12:35:50,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.024390243902439) internal successors, (83), 40 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 12:35:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-05-02 12:35:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 12:35:50,354 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:50,354 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:50,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 12:35:50,570 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:50,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1595481114, now seen corresponding path program 37 times [2021-05-02 12:35:50,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:50,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075364370] [2021-05-02 12:35:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:51,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:51,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075364370] [2021-05-02 12:35:51,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075364370] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:51,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011527009] [2021-05-02 12:35:51,199 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 12:35:51,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:51,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:51,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011527009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:51,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:51,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 12:35:51,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286601991] [2021-05-02 12:35:51,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 12:35:51,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:51,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 12:35:51,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 12:35:51,381 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 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 12:35:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:52,740 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-05-02 12:35:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 12:35:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 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 85 [2021-05-02 12:35:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:52,741 INFO L225 Difference]: With dead ends: 94 [2021-05-02 12:35:52,741 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 12:35:52,742 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1820.1ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:35:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 12:35:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-05-02 12:35:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2021-05-02 12:35:52,745 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2021-05-02 12:35:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:52,745 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2021-05-02 12:35:52,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 41 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 12:35:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2021-05-02 12:35:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 12:35:52,746 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:52,746 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:52,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 12:35:52,961 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:52,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1147969476, now seen corresponding path program 38 times [2021-05-02 12:35:52,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:52,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526180158] [2021-05-02 12:35:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:53,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:53,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:53,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526180158] [2021-05-02 12:35:53,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526180158] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:53,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894334969] [2021-05-02 12:35:53,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:53,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:53,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:53,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 12:35:53,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:53,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:53,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894334969] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:53,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:53,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 12:35:53,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217099071] [2021-05-02 12:35:53,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 12:35:53,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:53,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 12:35:53,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 12:35:53,813 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 42 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 12:35:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:55,232 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-05-02 12:35:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 12:35:55,233 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 42 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 87 [2021-05-02 12:35:55,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:55,233 INFO L225 Difference]: With dead ends: 96 [2021-05-02 12:35:55,233 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 12:35:55,234 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1904.1ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:35:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 12:35:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-05-02 12:35:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-05-02 12:35:55,237 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2021-05-02 12:35:55,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:55,238 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-05-02 12:35:55,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 42 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 12:35:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-05-02 12:35:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 12:35:55,238 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:55,238 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:55,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 12:35:55,454 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:55,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:55,454 INFO L82 PathProgramCache]: Analyzing trace with hash 494066722, now seen corresponding path program 39 times [2021-05-02 12:35:55,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:55,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187798628] [2021-05-02 12:35:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:56,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:56,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:56,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187798628] [2021-05-02 12:35:56,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187798628] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:56,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358401735] [2021-05-02 12:35:56,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:56,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 12:35:56,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:56,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 12:35:56,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:56,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:56,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358401735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:56,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:56,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-05-02 12:35:56,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46496885] [2021-05-02 12:35:56,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 12:35:56,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:56,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 12:35:56,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=1073, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 12:35:56,388 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:58,095 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-05-02 12:35:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 12:35:58,096 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 89 [2021-05-02 12:35:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:58,096 INFO L225 Difference]: With dead ends: 98 [2021-05-02 12:35:58,096 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 12:35:58,097 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 2202.3ms TimeCoverageRelationStatistics Valid=2712, Invalid=4598, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 12:35:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 12:35:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-05-02 12:35:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-05-02 12:35:58,100 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2021-05-02 12:35:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:58,100 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-05-02 12:35:58,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.0) internal successors, (90), 44 states have internal predecessors, (90), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:35:58,101 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-05-02 12:35:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 12:35:58,101 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:58,101 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:58,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 12:35:58,316 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:58,316 INFO L82 PathProgramCache]: Analyzing trace with hash -841254656, now seen corresponding path program 40 times [2021-05-02 12:35:58,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:58,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312411119] [2021-05-02 12:35:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:59,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:59,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312411119] [2021-05-02 12:35:59,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312411119] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:59,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378624842] [2021-05-02 12:35:59,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:59,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:59,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:59,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 12:35:59,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:59,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:59,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378624842] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:59,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:59,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-02 12:35:59,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147383468] [2021-05-02 12:35:59,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 12:35:59,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:59,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 12:35:59,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 12:35:59,261 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 2 states have call successors, (4), 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 12:36:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:00,805 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2021-05-02 12:36:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 12:36:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 2 states have call successors, (4), 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 12:36:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:00,806 INFO L225 Difference]: With dead ends: 100 [2021-05-02 12:36:00,806 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 12:36:00,806 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2104.1ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 12:36:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 12:36:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 12:36:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-05-02 12:36:00,810 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2021-05-02 12:36:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:00,810 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-05-02 12:36:00,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 2 states have call successors, (4), 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 12:36:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-05-02 12:36:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 12:36:00,810 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:00,810 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:01,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:01,013 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:01,013 INFO L82 PathProgramCache]: Analyzing trace with hash 110122590, now seen corresponding path program 41 times [2021-05-02 12:36:01,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:01,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295641600] [2021-05-02 12:36:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:01,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:01,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295641600] [2021-05-02 12:36:01,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295641600] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:01,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953641925] [2021-05-02 12:36:01,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:01,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 12:36:01,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:01,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 12:36:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:01,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:01,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953641925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:01,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:01,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 12:36:01,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024960241] [2021-05-02 12:36:01,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 12:36:01,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:01,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 12:36:01,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:36:01,991 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 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 12:36:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:03,568 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2021-05-02 12:36:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 12:36:03,569 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 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 93 [2021-05-02 12:36:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:03,569 INFO L225 Difference]: With dead ends: 102 [2021-05-02 12:36:03,569 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 12:36:03,570 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2182.1ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:36:03,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 12:36:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-05-02 12:36:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-05-02 12:36:03,573 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2021-05-02 12:36:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:03,573 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-05-02 12:36:03,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 45 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 12:36:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-05-02 12:36:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 12:36:03,574 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:03,574 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:03,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 12:36:03,789 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:03,790 INFO L82 PathProgramCache]: Analyzing trace with hash -444378052, now seen corresponding path program 42 times [2021-05-02 12:36:03,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:03,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382230492] [2021-05-02 12:36:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:04,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:04,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382230492] [2021-05-02 12:36:04,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382230492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:04,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688580921] [2021-05-02 12:36:04,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:04,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 12:36:04,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:04,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 12:36:04,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:04,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:04,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688580921] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:04,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:04,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 47 [2021-05-02 12:36:04,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928992759] [2021-05-02 12:36:04,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 12:36:04,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:04,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 12:36:04,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 12:36:04,821 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 46 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 12:36:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:06,455 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-05-02 12:36:06,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 12:36:06,455 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 46 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 95 [2021-05-02 12:36:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:06,456 INFO L225 Difference]: With dead ends: 104 [2021-05-02 12:36:06,456 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 12:36:06,457 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 2265.2ms TimeCoverageRelationStatistics Valid=3016, Invalid=4994, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 12:36:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 12:36:06,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-05-02 12:36:06,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-05-02 12:36:06,460 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2021-05-02 12:36:06,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:06,461 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-05-02 12:36:06,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 46 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 12:36:06,461 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-05-02 12:36:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 12:36:06,461 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:06,461 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:06,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:06,677 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:06,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:06,677 INFO L82 PathProgramCache]: Analyzing trace with hash -743550310, now seen corresponding path program 43 times [2021-05-02 12:36:06,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:06,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828729291] [2021-05-02 12:36:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:07,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:07,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828729291] [2021-05-02 12:36:07,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828729291] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:07,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617537047] [2021-05-02 12:36:07,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:07,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 12:36:07,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:07,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:07,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617537047] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:07,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:07,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 12:36:07,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011156027] [2021-05-02 12:36:07,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 12:36:07,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:07,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 12:36:07,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:36:07,680 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 2 states have call successors, (4), 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 12:36:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:09,332 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2021-05-02 12:36:09,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 12:36:09,333 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 2 states have call successors, (4), 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 97 [2021-05-02 12:36:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:09,333 INFO L225 Difference]: With dead ends: 106 [2021-05-02 12:36:09,333 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 12:36:09,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2217.8ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:36:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 12:36:09,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-05-02 12:36:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-05-02 12:36:09,338 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2021-05-02 12:36:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:09,338 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-05-02 12:36:09,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 2 states have call successors, (4), 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 12:36:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-05-02 12:36:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 12:36:09,339 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:09,339 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:09,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:09,545 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:09,545 INFO L82 PathProgramCache]: Analyzing trace with hash -485281416, now seen corresponding path program 44 times [2021-05-02 12:36:09,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:09,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078132318] [2021-05-02 12:36:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:10,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:10,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:10,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078132318] [2021-05-02 12:36:10,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078132318] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:10,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006320359] [2021-05-02 12:36:10,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:10,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:36:10,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:10,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 12:36:10,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:10,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:10,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006320359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:10,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:10,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 12:36:10,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148169030] [2021-05-02 12:36:10,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 12:36:10,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:10,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 12:36:10,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 12:36:10,661 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 48 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 12:36:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:12,458 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-05-02 12:36:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 12:36:12,458 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 48 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 99 [2021-05-02 12:36:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:12,459 INFO L225 Difference]: With dead ends: 108 [2021-05-02 12:36:12,459 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 12:36:12,459 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2480.2ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:36:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 12:36:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 12:36:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:12,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-05-02 12:36:12,463 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2021-05-02 12:36:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:12,463 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-05-02 12:36:12,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 48 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 12:36:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-05-02 12:36:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 12:36:12,464 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:12,464 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:12,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 12:36:12,679 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:12,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1396977450, now seen corresponding path program 45 times [2021-05-02 12:36:12,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:12,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879951623] [2021-05-02 12:36:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:13,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:13,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879951623] [2021-05-02 12:36:13,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879951623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:13,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855043170] [2021-05-02 12:36:13,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:13,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 12:36:13,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:13,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 47 conjunts are in the unsatisfiable core [2021-05-02 12:36:13,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:13,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:13,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855043170] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:13,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:13,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2021-05-02 12:36:13,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245844179] [2021-05-02 12:36:13,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 12:36:13,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:13,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 12:36:13,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:36:13,812 INFO L87 Difference]: Start difference. First operand 102 states and 102 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 12:36:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:15,640 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2021-05-02 12:36:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 12:36:15,640 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 101 [2021-05-02 12:36:15,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:15,641 INFO L225 Difference]: With dead ends: 110 [2021-05-02 12:36:15,641 INFO L226 Difference]: Without dead ends: 105 [2021-05-02 12:36:15,641 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 2491.0ms TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 12:36:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-02 12:36:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2021-05-02 12:36:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2021-05-02 12:36:15,646 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2021-05-02 12:36:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:15,646 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2021-05-02 12:36:15,646 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 12:36:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2021-05-02 12:36:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 12:36:15,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:15,647 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:15,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 12:36:15,863 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:15,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:15,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1363537740, now seen corresponding path program 46 times [2021-05-02 12:36:15,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:15,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868169239] [2021-05-02 12:36:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:16,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:16,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868169239] [2021-05-02 12:36:16,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868169239] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:16,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956353990] [2021-05-02 12:36:16,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:16,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:36:16,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:16,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 12:36:16,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:16,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:16,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:17,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956353990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:17,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:17,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-02 12:36:17,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654239177] [2021-05-02 12:36:17,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 12:36:17,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 12:36:17,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 12:36:17,059 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 51 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 2 states have call successors, (4), 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 12:36:18,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:18,535 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2021-05-02 12:36:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 12:36:18,536 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 2 states have call successors, (4), 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 103 [2021-05-02 12:36:18,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:18,536 INFO L225 Difference]: With dead ends: 112 [2021-05-02 12:36:18,536 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 12:36:18,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2237.3ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 12:36:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 12:36:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2021-05-02 12:36:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-05-02 12:36:18,541 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2021-05-02 12:36:18,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:18,541 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-05-02 12:36:18,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.019607843137255) internal successors, (103), 50 states have internal predecessors, (103), 2 states have call successors, (4), 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 12:36:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-05-02 12:36:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 12:36:18,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:18,542 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:18,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 12:36:18,754 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:18,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:18,755 INFO L82 PathProgramCache]: Analyzing trace with hash 707252498, now seen corresponding path program 47 times [2021-05-02 12:36:18,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:18,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892009277] [2021-05-02 12:36:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:19,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:19,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:19,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892009277] [2021-05-02 12:36:19,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892009277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:19,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772522608] [2021-05-02 12:36:19,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:19,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-02 12:36:19,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:19,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 12:36:19,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:19,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:19,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772522608] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:19,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:19,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 12:36:19,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187136471] [2021-05-02 12:36:19,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 12:36:19,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:19,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 12:36:19,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:36:19,978 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 51 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 12:36:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:21,380 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-05-02 12:36:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 12:36:21,381 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 51 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 105 [2021-05-02 12:36:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:21,396 INFO L225 Difference]: With dead ends: 114 [2021-05-02 12:36:21,396 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 12:36:21,399 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2221.7ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:36:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 12:36:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2021-05-02 12:36:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2021-05-02 12:36:21,403 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2021-05-02 12:36:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:21,403 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2021-05-02 12:36:21,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 51 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 12:36:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2021-05-02 12:36:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 12:36:21,403 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:21,403 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:21,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:21,604 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:21,604 INFO L82 PathProgramCache]: Analyzing trace with hash -2128154128, now seen corresponding path program 48 times [2021-05-02 12:36:21,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:21,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604461490] [2021-05-02 12:36:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:22,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:22,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604461490] [2021-05-02 12:36:22,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604461490] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:22,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333748441] [2021-05-02 12:36:22,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:22,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-02 12:36:22,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:22,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 12:36:22,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:22,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333748441] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:22,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:22,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 53 [2021-05-02 12:36:22,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257899481] [2021-05-02 12:36:22,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 12:36:22,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 12:36:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 12:36:22,746 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 52 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 12:36:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:24,830 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2021-05-02 12:36:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 12:36:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 52 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 107 [2021-05-02 12:36:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:24,831 INFO L225 Difference]: With dead ends: 116 [2021-05-02 12:36:24,832 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 12:36:24,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2718.7ms TimeCoverageRelationStatistics Valid=3877, Invalid=6425, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 12:36:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 12:36:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 12:36:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-05-02 12:36:24,836 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2021-05-02 12:36:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:24,837 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-05-02 12:36:24,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.018867924528302) internal successors, (107), 52 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 12:36:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-05-02 12:36:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 12:36:24,837 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:24,837 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:25,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 12:36:25,053 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash 350311246, now seen corresponding path program 49 times [2021-05-02 12:36:25,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:25,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320847080] [2021-05-02 12:36:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:26,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:26,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320847080] [2021-05-02 12:36:26,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320847080] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:26,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383856065] [2021-05-02 12:36:26,162 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:26,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 12:36:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:26,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:26,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383856065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:26,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:26,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 12:36:26,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527666543] [2021-05-02 12:36:26,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 12:36:26,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:26,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 12:36:26,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 12:36:26,378 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 2 states have call successors, (4), 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 12:36:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:28,538 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2021-05-02 12:36:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 12:36:28,539 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 2 states have call successors, (4), 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 12:36:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:28,539 INFO L225 Difference]: With dead ends: 118 [2021-05-02 12:36:28,540 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 12:36:28,540 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 3000.5ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 12:36:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 12:36:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-05-02 12:36:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.0093457943925233) internal successors, (108), 107 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2021-05-02 12:36:28,545 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2021-05-02 12:36:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:28,545 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2021-05-02 12:36:28,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 53 states have internal predecessors, (109), 2 states have call successors, (4), 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 12:36:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2021-05-02 12:36:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 12:36:28,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:28,546 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:28,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 12:36:28,753 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:28,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1551313620, now seen corresponding path program 50 times [2021-05-02 12:36:28,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:28,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715167314] [2021-05-02 12:36:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:29,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:29,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715167314] [2021-05-02 12:36:29,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715167314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:29,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609763572] [2021-05-02 12:36:29,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:29,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:36:29,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:29,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 12:36:29,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:29,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:29,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609763572] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:29,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:29,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 12:36:29,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770129610] [2021-05-02 12:36:29,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 12:36:29,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:29,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 12:36:29,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 12:36:29,996 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 54 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 12:36:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:31,931 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-05-02 12:36:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 12:36:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 54 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 111 [2021-05-02 12:36:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:31,932 INFO L225 Difference]: With dead ends: 120 [2021-05-02 12:36:31,932 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 12:36:31,933 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2761.3ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 12:36:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 12:36:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-05-02 12:36:31,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2021-05-02 12:36:31,937 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2021-05-02 12:36:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:31,937 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2021-05-02 12:36:31,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 54 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 12:36:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2021-05-02 12:36:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 12:36:31,938 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:31,938 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:32,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:32,153 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:32,154 INFO L82 PathProgramCache]: Analyzing trace with hash 643258250, now seen corresponding path program 51 times [2021-05-02 12:36:32,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:32,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126861381] [2021-05-02 12:36:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:33,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:33,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:33,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126861381] [2021-05-02 12:36:33,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126861381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:33,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860634166] [2021-05-02 12:36:33,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:33,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-05-02 12:36:33,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:33,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 12:36:33,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:33,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:33,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860634166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:33,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:33,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-05-02 12:36:33,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292946758] [2021-05-02 12:36:33,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 12:36:33,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 12:36:33,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1489, Invalid=1703, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 12:36:33,411 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:36:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:35,767 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2021-05-02 12:36:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 12:36:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2021-05-02 12:36:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:35,768 INFO L225 Difference]: With dead ends: 122 [2021-05-02 12:36:35,768 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 12:36:35,769 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 3053.9ms TimeCoverageRelationStatistics Valid=4458, Invalid=7532, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 12:36:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 12:36:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-05-02 12:36:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.009009009009009) internal successors, (112), 111 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-05-02 12:36:35,776 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2021-05-02 12:36:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:35,777 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-05-02 12:36:35,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.0) internal successors, (114), 56 states have internal predecessors, (114), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:36:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-05-02 12:36:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 12:36:35,777 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:35,778 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:35,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-05-02 12:36:35,979 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:35,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:35,979 INFO L82 PathProgramCache]: Analyzing trace with hash 797882984, now seen corresponding path program 52 times [2021-05-02 12:36:35,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:35,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905741790] [2021-05-02 12:36:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:37,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:37,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:37,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905741790] [2021-05-02 12:36:37,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905741790] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:37,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444290364] [2021-05-02 12:36:37,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:37,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:36:37,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:37,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 12:36:37,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:37,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:37,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444290364] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:37,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:37,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-02 12:36:37,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724210261] [2021-05-02 12:36:37,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 12:36:37,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:37,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 12:36:37,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 12:36:37,561 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 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 12:36:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:39,771 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2021-05-02 12:36:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 12:36:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 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 115 [2021-05-02 12:36:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:39,772 INFO L225 Difference]: With dead ends: 124 [2021-05-02 12:36:39,772 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 12:36:39,772 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3166.4ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 12:36:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 12:36:39,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 12:36:39,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.008849557522124) internal successors, (114), 113 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2021-05-02 12:36:39,776 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2021-05-02 12:36:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:39,777 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2021-05-02 12:36:39,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.017543859649123) internal successors, (115), 56 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 12:36:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2021-05-02 12:36:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 12:36:39,777 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:39,777 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:39,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:39,995 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:39,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:39,995 INFO L82 PathProgramCache]: Analyzing trace with hash -931603002, now seen corresponding path program 53 times [2021-05-02 12:36:39,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:39,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386802692] [2021-05-02 12:36:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:41,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:41,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:41,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386802692] [2021-05-02 12:36:41,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386802692] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:41,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575005816] [2021-05-02 12:36:41,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:41,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-05-02 12:36:41,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:41,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 12:36:41,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:41,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:41,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575005816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:41,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:41,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 12:36:41,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884890748] [2021-05-02 12:36:41,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 12:36:41,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 12:36:41,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:36:41,542 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 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 12:36:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:43,597 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2021-05-02 12:36:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 12:36:43,597 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 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 117 [2021-05-02 12:36:43,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:43,598 INFO L225 Difference]: With dead ends: 126 [2021-05-02 12:36:43,598 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 12:36:43,599 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3124.2ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 12:36:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 12:36:43,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2021-05-02 12:36:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2021-05-02 12:36:43,603 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2021-05-02 12:36:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:43,603 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2021-05-02 12:36:43,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.0172413793103448) internal successors, (117), 57 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 12:36:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2021-05-02 12:36:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 12:36:43,603 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:43,603 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:43,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 12:36:43,817 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:43,817 INFO L82 PathProgramCache]: Analyzing trace with hash -815291996, now seen corresponding path program 54 times [2021-05-02 12:36:43,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:43,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420304842] [2021-05-02 12:36:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:45,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:45,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420304842] [2021-05-02 12:36:45,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420304842] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:45,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269830640] [2021-05-02 12:36:45,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:45,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 12:36:45,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 12:36:45,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:45,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:45,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269830640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:45,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:45,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 59 [2021-05-02 12:36:45,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569574412] [2021-05-02 12:36:45,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 12:36:45,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 12:36:45,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 12:36:45,378 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 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 12:36:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:47,540 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2021-05-02 12:36:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 12:36:47,540 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 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 119 [2021-05-02 12:36:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:47,541 INFO L225 Difference]: With dead ends: 128 [2021-05-02 12:36:47,541 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 12:36:47,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 3194.6ms TimeCoverageRelationStatistics Valid=4846, Invalid=8036, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 12:36:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 12:36:47,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2021-05-02 12:36:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.0085470085470085) internal successors, (118), 117 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-05-02 12:36:47,545 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2021-05-02 12:36:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:47,545 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-05-02 12:36:47,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 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 12:36:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-05-02 12:36:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 12:36:47,546 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:47,546 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:47,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 12:36:47,747 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -709564926, now seen corresponding path program 55 times [2021-05-02 12:36:47,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:47,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997610748] [2021-05-02 12:36:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:49,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:49,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997610748] [2021-05-02 12:36:49,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997610748] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:49,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97954156] [2021-05-02 12:36:49,201 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 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 12:36:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:49,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 12:36:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:49,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:49,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97954156] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:49,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:49,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 12:36:49,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496371345] [2021-05-02 12:36:49,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 12:36:49,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:49,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 12:36:49,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:36:49,531 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 59 states have internal predecessors, (121), 2 states have call successors, (4), 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 12:36:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:51,717 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2021-05-02 12:36:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 12:36:51,717 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 59 states have internal predecessors, (121), 2 states have call successors, (4), 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 12:36:51,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:51,718 INFO L225 Difference]: With dead ends: 130 [2021-05-02 12:36:51,718 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 12:36:51,718 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3372.7ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 12:36:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 12:36:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-05-02 12:36:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.0084033613445378) internal successors, (120), 119 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2021-05-02 12:36:51,722 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2021-05-02 12:36:51,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:51,722 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2021-05-02 12:36:51,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 59 states have internal predecessors, (121), 2 states have call successors, (4), 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 12:36:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2021-05-02 12:36:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 12:36:51,723 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:51,723 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:51,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:51,939 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2109901536, now seen corresponding path program 56 times [2021-05-02 12:36:51,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:51,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598831693] [2021-05-02 12:36:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:53,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:53,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598831693] [2021-05-02 12:36:53,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598831693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:53,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490313139] [2021-05-02 12:36:53,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:53,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:36:53,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:53,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 12:36:53,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:53,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:53,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490313139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:53,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:53,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 12:36:53,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917760200] [2021-05-02 12:36:53,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 12:36:53,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:53,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 12:36:53,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 12:36:53,324 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 61 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 60 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 12:36:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:55,599 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2021-05-02 12:36:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 12:36:55,600 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 60 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 123 [2021-05-02 12:36:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:55,600 INFO L225 Difference]: With dead ends: 132 [2021-05-02 12:36:55,600 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 12:36:55,601 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3163.8ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 12:36:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 12:36:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 12:36:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.0082644628099173) internal successors, (122), 121 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2021-05-02 12:36:55,605 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2021-05-02 12:36:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:55,605 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2021-05-02 12:36:55,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.0163934426229506) internal successors, (123), 60 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 12:36:55,605 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2021-05-02 12:36:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 12:36:55,605 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:55,605 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:55,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 12:36:55,821 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1492807742, now seen corresponding path program 57 times [2021-05-02 12:36:55,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:55,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918589162] [2021-05-02 12:36:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:57,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:57,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918589162] [2021-05-02 12:36:57,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918589162] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:57,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558451477] [2021-05-02 12:36:57,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:57,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 12:36:57,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:57,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 12:36:57,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:57,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:57,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558451477] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:57,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:57,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-05-02 12:36:57,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279688972] [2021-05-02 12:36:57,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 12:36:57,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 12:36:57,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1834, Invalid=2072, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 12:36:57,546 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:37:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:00,611 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2021-05-02 12:37:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 12:37:00,611 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 125 [2021-05-02 12:37:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:00,612 INFO L225 Difference]: With dead ends: 134 [2021-05-02 12:37:00,612 INFO L226 Difference]: Without dead ends: 129 [2021-05-02 12:37:00,612 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 4144.6ms TimeCoverageRelationStatistics Valid=5493, Invalid=9269, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 12:37:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-02 12:37:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2021-05-02 12:37:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.008130081300813) internal successors, (124), 123 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2021-05-02 12:37:00,616 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2021-05-02 12:37:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:00,617 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2021-05-02 12:37:00,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.0) internal successors, (126), 62 states have internal predecessors, (126), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:37:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2021-05-02 12:37:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 12:37:00,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:00,617 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:00,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:00,840 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:00,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:00,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1171158556, now seen corresponding path program 58 times [2021-05-02 12:37:00,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:00,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589827241] [2021-05-02 12:37:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:02,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:02,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589827241] [2021-05-02 12:37:02,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589827241] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:02,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106248984] [2021-05-02 12:37:02,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:02,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:37:02,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:02,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 12:37:02,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:02,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:02,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106248984] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:02,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:02,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-02 12:37:02,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105827819] [2021-05-02 12:37:02,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 12:37:02,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 12:37:02,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 12:37:02,709 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 62 states have internal predecessors, (127), 2 states have call successors, (4), 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 12:37:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:05,269 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2021-05-02 12:37:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 12:37:05,270 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 62 states have internal predecessors, (127), 2 states have call successors, (4), 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 12:37:05,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:05,270 INFO L225 Difference]: With dead ends: 136 [2021-05-02 12:37:05,270 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 12:37:05,271 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3909.4ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 12:37:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 12:37:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-05-02 12:37:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.008) internal successors, (126), 125 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2021-05-02 12:37:05,275 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2021-05-02 12:37:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:05,275 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2021-05-02 12:37:05,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 62 states have internal predecessors, (127), 2 states have call successors, (4), 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 12:37:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2021-05-02 12:37:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 12:37:05,276 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:05,276 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:05,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 12:37:05,492 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:05,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1303936122, now seen corresponding path program 59 times [2021-05-02 12:37:05,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:05,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128165285] [2021-05-02 12:37:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:06,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:06,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128165285] [2021-05-02 12:37:06,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128165285] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:06,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378629629] [2021-05-02 12:37:06,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:06,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-05-02 12:37:06,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:06,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 12:37:06,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:06,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:06,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:07,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378629629] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:07,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:07,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 12:37:07,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422455331] [2021-05-02 12:37:07,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 12:37:07,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:07,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 12:37:07,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:37:07,119 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 64 states, 64 states have (on average 2.015625) internal successors, (129), 63 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 12:37:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:09,914 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2021-05-02 12:37:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 12:37:09,915 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.015625) internal successors, (129), 63 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 129 [2021-05-02 12:37:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:09,915 INFO L225 Difference]: With dead ends: 138 [2021-05-02 12:37:09,915 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 12:37:09,916 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3817.6ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 12:37:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 12:37:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-05-02 12:37:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0078740157480315) internal successors, (128), 127 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2021-05-02 12:37:09,920 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2021-05-02 12:37:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:09,920 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2021-05-02 12:37:09,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.015625) internal successors, (129), 63 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 12:37:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2021-05-02 12:37:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 12:37:09,921 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:09,921 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:10,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 12:37:10,122 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:10,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:10,122 INFO L82 PathProgramCache]: Analyzing trace with hash 54158168, now seen corresponding path program 60 times [2021-05-02 12:37:10,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:10,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626020813] [2021-05-02 12:37:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:11,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:11,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:11,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626020813] [2021-05-02 12:37:11,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626020813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:11,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51864410] [2021-05-02 12:37:11,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:11,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-05-02 12:37:11,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:11,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 12:37:11,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:11,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:11,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:12,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51864410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:12,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:12,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 65 [2021-05-02 12:37:12,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618414852] [2021-05-02 12:37:12,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 12:37:12,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 12:37:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 12:37:12,208 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 64 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 12:37:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:15,071 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2021-05-02 12:37:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 12:37:15,071 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 64 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 131 [2021-05-02 12:37:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:15,072 INFO L225 Difference]: With dead ends: 140 [2021-05-02 12:37:15,072 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 12:37:15,073 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 4288.4ms TimeCoverageRelationStatistics Valid=5923, Invalid=9827, Unknown=0, NotChecked=0, Total=15750 [2021-05-02 12:37:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 12:37:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 12:37:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0077519379844961) internal successors, (130), 129 states have internal predecessors, (130), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-05-02 12:37:15,077 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2021-05-02 12:37:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:15,077 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-05-02 12:37:15,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.0153846153846153) internal successors, (131), 64 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 12:37:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-05-02 12:37:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 12:37:15,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:15,078 INFO L523 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:15,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:15,278 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1608387254, now seen corresponding path program 61 times [2021-05-02 12:37:15,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:15,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500596408] [2021-05-02 12:37:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:17,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:17,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500596408] [2021-05-02 12:37:17,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500596408] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:17,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722719904] [2021-05-02 12:37:17,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:17,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 12:37:17,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:17,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:17,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722719904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:17,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:17,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 12:37:17,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079922710] [2021-05-02 12:37:17,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 12:37:17,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 12:37:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:37:17,354 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 65 states have internal predecessors, (133), 2 states have call successors, (4), 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 12:37:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:20,030 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2021-05-02 12:37:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 12:37:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 65 states have internal predecessors, (133), 2 states have call successors, (4), 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 133 [2021-05-02 12:37:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:20,031 INFO L225 Difference]: With dead ends: 142 [2021-05-02 12:37:20,031 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 12:37:20,032 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 4231.7ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 12:37:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 12:37:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2021-05-02 12:37:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0076335877862594) internal successors, (132), 131 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2021-05-02 12:37:20,036 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2021-05-02 12:37:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:20,036 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2021-05-02 12:37:20,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.015151515151515) internal successors, (133), 65 states have internal predecessors, (133), 2 states have call successors, (4), 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 12:37:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2021-05-02 12:37:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 12:37:20,037 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:20,037 INFO L523 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:20,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:20,252 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash 573919892, now seen corresponding path program 62 times [2021-05-02 12:37:20,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:20,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323600193] [2021-05-02 12:37:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:21,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:21,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:21,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323600193] [2021-05-02 12:37:21,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323600193] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:21,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467588264] [2021-05-02 12:37:21,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:21,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:37:21,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:21,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 12:37:21,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:21,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:22,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467588264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:22,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:22,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 12:37:22,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849772284] [2021-05-02 12:37:22,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 12:37:22,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:22,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 12:37:22,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 12:37:22,098 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand has 67 states, 67 states have (on average 2.014925373134328) internal successors, (135), 66 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 12:37:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:25,129 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-05-02 12:37:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 12:37:25,130 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.014925373134328) internal successors, (135), 66 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 135 [2021-05-02 12:37:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:25,131 INFO L225 Difference]: With dead ends: 144 [2021-05-02 12:37:25,131 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 12:37:25,132 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4192.2ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 12:37:25,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 12:37:25,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-05-02 12:37:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.0075187969924813) internal successors, (134), 133 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2021-05-02 12:37:25,136 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2021-05-02 12:37:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:25,136 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2021-05-02 12:37:25,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.014925373134328) internal successors, (135), 66 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 12:37:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2021-05-02 12:37:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 12:37:25,137 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:25,137 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:25,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:25,337 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:25,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1411769614, now seen corresponding path program 63 times [2021-05-02 12:37:25,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:25,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177325707] [2021-05-02 12:37:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:27,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:27,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:27,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177325707] [2021-05-02 12:37:27,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177325707] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:27,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070401699] [2021-05-02 12:37:27,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:27,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-05-02 12:37:27,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:27,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 12:37:27,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:27,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:27,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070401699] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:27,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:27,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-05-02 12:37:27,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906122995] [2021-05-02 12:37:27,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 12:37:27,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 12:37:27,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2215, Invalid=2477, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 12:37:27,601 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:37:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:31,210 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2021-05-02 12:37:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 12:37:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 137 [2021-05-02 12:37:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:31,211 INFO L225 Difference]: With dead ends: 146 [2021-05-02 12:37:31,211 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 12:37:31,212 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 5158.4ms TimeCoverageRelationStatistics Valid=6636, Invalid=11186, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 12:37:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 12:37:31,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-05-02 12:37:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.0074074074074073) internal successors, (136), 135 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2021-05-02 12:37:31,228 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2021-05-02 12:37:31,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:31,228 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2021-05-02 12:37:31,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.0) internal successors, (138), 68 states have internal predecessors, (138), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:37:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2021-05-02 12:37:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 12:37:31,229 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:31,229 INFO L523 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:31,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:31,429 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1601061840, now seen corresponding path program 64 times [2021-05-02 12:37:31,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:31,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309228737] [2021-05-02 12:37:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:32,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:32,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309228737] [2021-05-02 12:37:32,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309228737] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:32,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237784840] [2021-05-02 12:37:32,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:32,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:37:32,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:32,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 12:37:32,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:32,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237784840] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:32,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:32,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-02 12:37:32,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015691393] [2021-05-02 12:37:32,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 12:37:32,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:32,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 12:37:32,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 12:37:32,955 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand has 69 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 68 states have internal predecessors, (139), 2 states have call successors, (4), 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 12:37:35,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:35,894 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2021-05-02 12:37:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 12:37:35,894 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 68 states have internal predecessors, (139), 2 states have call successors, (4), 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 139 [2021-05-02 12:37:35,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:35,895 INFO L225 Difference]: With dead ends: 148 [2021-05-02 12:37:35,895 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 12:37:35,896 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 3918.0ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 12:37:35,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 12:37:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 12:37:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2021-05-02 12:37:35,900 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2021-05-02 12:37:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:35,901 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2021-05-02 12:37:35,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.0144927536231885) internal successors, (139), 68 states have internal predecessors, (139), 2 states have call successors, (4), 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 12:37:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2021-05-02 12:37:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 12:37:35,901 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:35,901 INFO L523 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:36,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:36,117 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash 2124131630, now seen corresponding path program 65 times [2021-05-02 12:37:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:36,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682839581] [2021-05-02 12:37:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:38,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:38,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682839581] [2021-05-02 12:37:38,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682839581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:38,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792717244] [2021-05-02 12:37:38,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:38,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 12:37:38,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:38,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 12:37:38,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:38,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:38,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792717244] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:38,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:38,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 12:37:38,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456542602] [2021-05-02 12:37:38,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 12:37:38,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:38,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 12:37:38,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:37:38,524 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 69 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 12:37:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:41,753 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2021-05-02 12:37:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 12:37:41,754 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 69 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 141 [2021-05-02 12:37:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:41,754 INFO L225 Difference]: With dead ends: 150 [2021-05-02 12:37:41,754 INFO L226 Difference]: Without dead ends: 145 [2021-05-02 12:37:41,755 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4987.6ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 12:37:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-05-02 12:37:41,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2021-05-02 12:37:41,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.0071942446043165) internal successors, (140), 139 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2021-05-02 12:37:41,760 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2021-05-02 12:37:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:41,760 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2021-05-02 12:37:41,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 69 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 12:37:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2021-05-02 12:37:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 12:37:41,760 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:41,760 INFO L523 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:41,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 12:37:41,976 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:41,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2011941108, now seen corresponding path program 66 times [2021-05-02 12:37:41,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:41,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006600821] [2021-05-02 12:37:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:43,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:43,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006600821] [2021-05-02 12:37:43,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006600821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:43,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360945153] [2021-05-02 12:37:43,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:43,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-05-02 12:37:43,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:43,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 12:37:43,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:43,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:43,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360945153] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:43,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:43,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 71 [2021-05-02 12:37:43,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514454119] [2021-05-02 12:37:43,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 12:37:43,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:43,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 12:37:43,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 12:37:43,704 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 70 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 12:37:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:46,694 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2021-05-02 12:37:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 12:37:46,695 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 70 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 143 [2021-05-02 12:37:46,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:46,696 INFO L225 Difference]: With dead ends: 152 [2021-05-02 12:37:46,696 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 12:37:46,697 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 4012.4ms TimeCoverageRelationStatistics Valid=7108, Invalid=11798, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 12:37:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 12:37:46,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-05-02 12:37:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-05-02 12:37:46,701 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2021-05-02 12:37:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:46,701 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-05-02 12:37:46,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.0140845070422535) internal successors, (143), 70 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 12:37:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-05-02 12:37:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 12:37:46,702 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:46,702 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:46,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-02 12:37:46,918 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:46,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:46,918 INFO L82 PathProgramCache]: Analyzing trace with hash 361873770, now seen corresponding path program 67 times [2021-05-02 12:37:46,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:46,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194874078] [2021-05-02 12:37:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:48,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:48,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:48,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194874078] [2021-05-02 12:37:48,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194874078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:48,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747672981] [2021-05-02 12:37:48,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:48,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 12:37:48,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:48,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:48,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747672981] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:48,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:48,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 12:37:48,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121231465] [2021-05-02 12:37:48,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 12:37:48,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:48,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 12:37:48,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 12:37:48,979 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 72 states, 72 states have (on average 2.013888888888889) internal successors, (145), 71 states have internal predecessors, (145), 2 states have call successors, (4), 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 12:37:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:51,964 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2021-05-02 12:37:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 12:37:51,965 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.013888888888889) internal successors, (145), 71 states have internal predecessors, (145), 2 states have call successors, (4), 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 12:37:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:51,966 INFO L225 Difference]: With dead ends: 154 [2021-05-02 12:37:51,966 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 12:37:51,967 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 4450.5ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 12:37:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 12:37:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-05-02 12:37:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.006993006993007) internal successors, (144), 143 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2021-05-02 12:37:51,972 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2021-05-02 12:37:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:51,972 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2021-05-02 12:37:51,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.013888888888889) internal successors, (145), 71 states have internal predecessors, (145), 2 states have call successors, (4), 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 12:37:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2021-05-02 12:37:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 12:37:51,973 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:51,973 INFO L523 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:52,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:52,174 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:52,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:52,175 INFO L82 PathProgramCache]: Analyzing trace with hash 970337352, now seen corresponding path program 68 times [2021-05-02 12:37:52,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:52,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870968543] [2021-05-02 12:37:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:54,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:54,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:54,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870968543] [2021-05-02 12:37:54,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870968543] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:54,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130429318] [2021-05-02 12:37:54,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:54,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:37:54,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:54,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 12:37:54,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:54,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:54,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130429318] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:54,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:54,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 12:37:54,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006171324] [2021-05-02 12:37:54,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 12:37:54,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:54,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 12:37:54,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 12:37:54,571 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 73 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 72 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 12:37:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:58,194 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-05-02 12:37:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 12:37:58,195 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 72 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 147 [2021-05-02 12:37:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:58,196 INFO L225 Difference]: With dead ends: 156 [2021-05-02 12:37:58,196 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 12:37:58,197 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5257.2ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 12:37:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 12:37:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 12:37:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.006896551724138) internal successors, (146), 145 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2021-05-02 12:37:58,202 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2021-05-02 12:37:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:58,202 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2021-05-02 12:37:58,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0136986301369864) internal successors, (147), 72 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 12:37:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2021-05-02 12:37:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 12:37:58,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:58,203 INFO L523 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:58,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 12:37:58,403 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:58,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:58,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1588287398, now seen corresponding path program 69 times [2021-05-02 12:37:58,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:58,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873103610] [2021-05-02 12:37:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:00,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:00,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873103610] [2021-05-02 12:38:00,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873103610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:00,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559138696] [2021-05-02 12:38:00,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:00,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-02 12:38:00,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:00,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 12:38:00,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:00,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:00,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559138696] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:00,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:00,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-05-02 12:38:00,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146902570] [2021-05-02 12:38:00,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 12:38:00,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 12:38:00,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2632, Invalid=2918, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 12:38:00,980 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:38:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:05,187 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2021-05-02 12:38:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 12:38:05,188 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 149 [2021-05-02 12:38:05,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:05,189 INFO L225 Difference]: With dead ends: 158 [2021-05-02 12:38:05,189 INFO L226 Difference]: Without dead ends: 153 [2021-05-02 12:38:05,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2758 ImplicationChecksByTransitivity, 5986.8ms TimeCoverageRelationStatistics Valid=7887, Invalid=13283, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 12:38:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-05-02 12:38:05,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-05-02 12:38:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0068027210884354) internal successors, (148), 147 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-05-02 12:38:05,195 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2021-05-02 12:38:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:05,195 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-05-02 12:38:05,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:38:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-05-02 12:38:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 12:38:05,196 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:05,196 INFO L523 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:05,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 12:38:05,413 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1562172540, now seen corresponding path program 70 times [2021-05-02 12:38:05,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:05,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983505616] [2021-05-02 12:38:05,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:07,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:07,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983505616] [2021-05-02 12:38:07,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983505616] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:07,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266096155] [2021-05-02 12:38:07,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:07,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:38:07,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:07,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 12:38:07,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:07,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266096155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:07,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:07,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 12:38:07,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254672165] [2021-05-02 12:38:07,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 12:38:07,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:07,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 12:38:07,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 12:38:07,900 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 74 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 12:38:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:10,769 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2021-05-02 12:38:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 12:38:10,769 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 74 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 151 [2021-05-02 12:38:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:10,770 INFO L225 Difference]: With dead ends: 160 [2021-05-02 12:38:10,770 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 12:38:10,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 4703.0ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 12:38:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 12:38:10,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-05-02 12:38:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.0067114093959733) internal successors, (150), 149 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-05-02 12:38:10,776 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2021-05-02 12:38:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:10,776 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-05-02 12:38:10,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 74 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 12:38:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-05-02 12:38:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 12:38:10,776 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:10,776 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:10,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-05-02 12:38:10,992 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1202229278, now seen corresponding path program 71 times [2021-05-02 12:38:10,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:10,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183147838] [2021-05-02 12:38:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:13,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:13,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183147838] [2021-05-02 12:38:13,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183147838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:13,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938421842] [2021-05-02 12:38:13,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:13,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-05-02 12:38:13,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:13,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 12:38:13,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:13,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:13,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938421842] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:13,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:13,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 12:38:13,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018051413] [2021-05-02 12:38:13,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 12:38:13,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:13,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 12:38:13,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:38:13,469 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 75 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 12:38:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:17,423 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2021-05-02 12:38:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 12:38:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 75 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 153 [2021-05-02 12:38:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:17,424 INFO L225 Difference]: With dead ends: 162 [2021-05-02 12:38:17,424 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 12:38:17,426 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5745.4ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 12:38:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 12:38:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-05-02 12:38:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.0066225165562914) internal successors, (152), 151 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2021-05-02 12:38:17,431 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2021-05-02 12:38:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:17,431 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2021-05-02 12:38:17,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 75 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 12:38:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2021-05-02 12:38:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 12:38:17,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:17,432 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:17,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:17,648 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:17,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1105861824, now seen corresponding path program 72 times [2021-05-02 12:38:17,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:17,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951993622] [2021-05-02 12:38:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:20,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:20,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:20,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951993622] [2021-05-02 12:38:20,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951993622] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:20,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901563813] [2021-05-02 12:38:20,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:20,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-05-02 12:38:20,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:20,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 12:38:20,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:20,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901563813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:20,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:20,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 77 [2021-05-02 12:38:20,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484905911] [2021-05-02 12:38:20,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 12:38:20,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:20,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 12:38:20,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 12:38:20,409 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand has 77 states, 77 states have (on average 2.012987012987013) internal successors, (155), 76 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 12:38:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:24,414 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2021-05-02 12:38:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 12:38:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.012987012987013) internal successors, (155), 76 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 155 [2021-05-02 12:38:24,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:24,415 INFO L225 Difference]: With dead ends: 164 [2021-05-02 12:38:24,415 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 12:38:24,416 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2913 ImplicationChecksByTransitivity, 6024.6ms TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 12:38:24,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 12:38:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 12:38:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.0065359477124183) internal successors, (154), 153 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-05-02 12:38:24,422 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2021-05-02 12:38:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:24,422 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-05-02 12:38:24,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.012987012987013) internal successors, (155), 76 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 12:38:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-05-02 12:38:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 12:38:24,422 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:24,423 INFO L523 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:24,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:24,633 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:24,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1316681186, now seen corresponding path program 73 times [2021-05-02 12:38:24,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:24,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116597030] [2021-05-02 12:38:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:27,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:27,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116597030] [2021-05-02 12:38:27,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116597030] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:27,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571322380] [2021-05-02 12:38:27,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:27,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 12:38:27,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:27,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:27,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571322380] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:27,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:27,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 12:38:27,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709092789] [2021-05-02 12:38:27,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 12:38:27,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:27,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 12:38:27,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 12:38:27,460 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 77 states have internal predecessors, (157), 2 states have call successors, (4), 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 12:38:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:31,568 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2021-05-02 12:38:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 12:38:31,568 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 77 states have internal predecessors, (157), 2 states have call successors, (4), 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 12:38:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:31,569 INFO L225 Difference]: With dead ends: 166 [2021-05-02 12:38:31,569 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 12:38:31,580 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 6187.9ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 12:38:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 12:38:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2021-05-02 12:38:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.0064516129032257) internal successors, (156), 155 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2021-05-02 12:38:31,585 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2021-05-02 12:38:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:31,585 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2021-05-02 12:38:31,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 77 states have internal predecessors, (157), 2 states have call successors, (4), 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 12:38:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2021-05-02 12:38:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 12:38:31,586 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:31,586 INFO L523 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:31,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:31,797 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1508239364, now seen corresponding path program 74 times [2021-05-02 12:38:31,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:31,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905451014] [2021-05-02 12:38:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:34,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:34,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905451014] [2021-05-02 12:38:34,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905451014] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:34,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565083315] [2021-05-02 12:38:34,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:34,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:38:34,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:34,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 12:38:34,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:34,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:34,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565083315] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:34,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:34,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 12:38:34,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523568690] [2021-05-02 12:38:34,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 12:38:34,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:34,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 12:38:34,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 12:38:34,593 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand has 79 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 78 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 12:38:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:38,278 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-05-02 12:38:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 12:38:38,279 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 78 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 159 [2021-05-02 12:38:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:38,279 INFO L225 Difference]: With dead ends: 168 [2021-05-02 12:38:38,279 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 12:38:38,281 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 5782.2ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 12:38:38,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 12:38:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-05-02 12:38:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.0063694267515924) internal successors, (158), 157 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-05-02 12:38:38,300 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2021-05-02 12:38:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:38,301 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-05-02 12:38:38,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.0126582278481013) internal successors, (159), 78 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 12:38:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-05-02 12:38:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 12:38:38,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:38,301 INFO L523 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:38,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-05-02 12:38:38,502 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:38,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:38,502 INFO L82 PathProgramCache]: Analyzing trace with hash -912054694, now seen corresponding path program 75 times [2021-05-02 12:38:38,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:38,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805614684] [2021-05-02 12:38:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:41,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:41,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805614684] [2021-05-02 12:38:41,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805614684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:41,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907301357] [2021-05-02 12:38:41,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:41,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-05-02 12:38:41,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:41,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 12:38:41,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:41,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:41,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907301357] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:41,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:41,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-05-02 12:38:41,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153049899] [2021-05-02 12:38:41,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 12:38:41,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 12:38:41,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=3395, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 12:38:41,530 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:38:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:46,509 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2021-05-02 12:38:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 12:38:46,510 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 161 [2021-05-02 12:38:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:46,511 INFO L225 Difference]: With dead ends: 170 [2021-05-02 12:38:46,511 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 12:38:46,512 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3223 ImplicationChecksByTransitivity, 7195.0ms TimeCoverageRelationStatistics Valid=9246, Invalid=15560, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 12:38:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 12:38:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-05-02 12:38:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.0062893081761006) internal successors, (160), 159 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2021-05-02 12:38:46,518 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2021-05-02 12:38:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:46,518 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2021-05-02 12:38:46,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:38:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2021-05-02 12:38:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 12:38:46,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:46,519 INFO L523 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:46,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:46,736 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:46,736 INFO L82 PathProgramCache]: Analyzing trace with hash 790762808, now seen corresponding path program 76 times [2021-05-02 12:38:46,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:46,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811636428] [2021-05-02 12:38:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:49,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:49,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:49,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811636428] [2021-05-02 12:38:49,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811636428] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:49,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449324274] [2021-05-02 12:38:49,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:49,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:38:49,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:49,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 12:38:49,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:49,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:49,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449324274] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:49,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:49,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 12:38:49,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292605294] [2021-05-02 12:38:49,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 12:38:49,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:49,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 12:38:49,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 12:38:49,618 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand has 81 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 80 states have internal predecessors, (163), 2 states have call successors, (4), 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 12:38:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:53,827 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2021-05-02 12:38:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 12:38:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 80 states have internal predecessors, (163), 2 states have call successors, (4), 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 163 [2021-05-02 12:38:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:53,828 INFO L225 Difference]: With dead ends: 172 [2021-05-02 12:38:53,828 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 12:38:53,829 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 6266.2ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 12:38:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 12:38:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 12:38:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.0062111801242235) internal successors, (162), 161 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2021-05-02 12:38:53,835 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2021-05-02 12:38:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:53,835 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2021-05-02 12:38:53,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0123456790123457) internal successors, (163), 80 states have internal predecessors, (163), 2 states have call successors, (4), 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 12:38:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2021-05-02 12:38:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 12:38:53,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:53,836 INFO L523 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:54,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:54,052 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash 815842454, now seen corresponding path program 77 times [2021-05-02 12:38:54,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:54,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060442689] [2021-05-02 12:38:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:56,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:56,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:56,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060442689] [2021-05-02 12:38:56,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060442689] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:56,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257361783] [2021-05-02 12:38:56,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:56,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-05-02 12:38:56,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:56,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 12:38:56,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:56,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257361783] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:56,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:56,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 12:38:56,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71437586] [2021-05-02 12:38:56,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 12:38:56,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 12:38:56,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:38:56,627 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 82 states, 82 states have (on average 2.0121951219512195) internal successors, (165), 81 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 12:39:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:01,218 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2021-05-02 12:39:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 12:39:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0121951219512195) internal successors, (165), 81 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 165 [2021-05-02 12:39:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:01,219 INFO L225 Difference]: With dead ends: 174 [2021-05-02 12:39:01,219 INFO L226 Difference]: Without dead ends: 169 [2021-05-02 12:39:01,220 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 6332.6ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 12:39:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-02 12:39:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-05-02 12:39:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.0061349693251533) internal successors, (164), 163 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2021-05-02 12:39:01,234 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2021-05-02 12:39:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:01,235 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2021-05-02 12:39:01,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0121951219512195) internal successors, (165), 81 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 12:39:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2021-05-02 12:39:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 12:39:01,235 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:01,236 INFO L523 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:01,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 12:39:01,449 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:01,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:01,449 INFO L82 PathProgramCache]: Analyzing trace with hash -852421516, now seen corresponding path program 78 times [2021-05-02 12:39:01,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:01,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698944508] [2021-05-02 12:39:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:04,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:04,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:04,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698944508] [2021-05-02 12:39:04,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698944508] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:04,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921038880] [2021-05-02 12:39:04,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:04,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 12:39:04,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:04,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 12:39:04,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:04,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:04,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921038880] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:04,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:04,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 83 [2021-05-02 12:39:04,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648719905] [2021-05-02 12:39:04,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 12:39:04,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:04,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 12:39:04,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 12:39:04,749 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand has 83 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 82 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 12:39:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:09,469 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2021-05-02 12:39:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 12:39:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 82 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 167 [2021-05-02 12:39:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:09,470 INFO L225 Difference]: With dead ends: 176 [2021-05-02 12:39:09,470 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 12:39:09,472 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 7047.4ms TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 12:39:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 12:39:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2021-05-02 12:39:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.006060606060606) internal successors, (166), 165 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-05-02 12:39:09,477 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2021-05-02 12:39:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:09,477 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-05-02 12:39:09,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 82 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 12:39:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-05-02 12:39:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 12:39:09,478 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:09,478 INFO L523 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:09,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 12:39:09,695 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:09,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2031295278, now seen corresponding path program 79 times [2021-05-02 12:39:09,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:09,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167312381] [2021-05-02 12:39:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:12,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:12,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167312381] [2021-05-02 12:39:12,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167312381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:12,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727512564] [2021-05-02 12:39:12,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:12,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 12:39:12,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:12,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:12,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727512564] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:12,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:12,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 12:39:12,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384208885] [2021-05-02 12:39:12,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 12:39:12,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 12:39:12,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:39:12,817 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 84 states, 84 states have (on average 2.011904761904762) internal successors, (169), 83 states have internal predecessors, (169), 2 states have call successors, (4), 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 12:39:17,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:17,664 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2021-05-02 12:39:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 12:39:17,665 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.011904761904762) internal successors, (169), 83 states have internal predecessors, (169), 2 states have call successors, (4), 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 169 [2021-05-02 12:39:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:17,665 INFO L225 Difference]: With dead ends: 178 [2021-05-02 12:39:17,665 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 12:39:17,667 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 7096.0ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 12:39:17,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 12:39:17,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-05-02 12:39:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2021-05-02 12:39:17,683 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2021-05-02 12:39:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:17,683 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2021-05-02 12:39:17,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.011904761904762) internal successors, (169), 83 states have internal predecessors, (169), 2 states have call successors, (4), 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 12:39:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2021-05-02 12:39:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 12:39:17,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:17,684 INFO L523 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:17,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:17,885 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1057614416, now seen corresponding path program 80 times [2021-05-02 12:39:17,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:17,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841755128] [2021-05-02 12:39:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:20,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:20,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:20,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841755128] [2021-05-02 12:39:20,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841755128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:20,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558913305] [2021-05-02 12:39:20,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:20,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:39:20,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:20,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 12:39:20,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:20,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:20,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:21,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558913305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:21,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:21,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 12:39:21,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801513685] [2021-05-02 12:39:21,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 12:39:21,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:21,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 12:39:21,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 12:39:21,315 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 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 12:39:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:26,446 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-05-02 12:39:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 12:39:26,447 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 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 171 [2021-05-02 12:39:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:26,447 INFO L225 Difference]: With dead ends: 180 [2021-05-02 12:39:26,448 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 12:39:26,449 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 7640.2ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 12:39:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 12:39:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 12:39:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.0059171597633136) internal successors, (170), 169 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2021-05-02 12:39:26,454 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2021-05-02 12:39:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:26,454 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2021-05-02 12:39:26,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 84 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 12:39:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2021-05-02 12:39:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 12:39:26,455 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:26,455 INFO L523 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:26,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:26,672 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1653176562, now seen corresponding path program 81 times [2021-05-02 12:39:26,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:26,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735632496] [2021-05-02 12:39:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:29,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:29,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:29,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735632496] [2021-05-02 12:39:29,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735632496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:29,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962280735] [2021-05-02 12:39:29,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:29,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2021-05-02 12:39:29,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:29,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 12:39:29,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:29,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:29,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:30,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962280735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:30,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:30,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-05-02 12:39:30,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665015574] [2021-05-02 12:39:30,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 12:39:30,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:30,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 12:39:30,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3574, Invalid=3908, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 12:39:30,114 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:39:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:36,593 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2021-05-02 12:39:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 12:39:36,594 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2021-05-02 12:39:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:36,595 INFO L225 Difference]: With dead ends: 182 [2021-05-02 12:39:36,595 INFO L226 Difference]: Without dead ends: 177 [2021-05-02 12:39:36,596 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 8806.1ms TimeCoverageRelationStatistics Valid=10713, Invalid=18017, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 12:39:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-02 12:39:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2021-05-02 12:39:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.0058479532163742) internal successors, (172), 171 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2021-05-02 12:39:36,601 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2021-05-02 12:39:36,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:36,601 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2021-05-02 12:39:36,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:39:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2021-05-02 12:39:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 12:39:36,602 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:36,602 INFO L523 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:36,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:36,819 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1537218796, now seen corresponding path program 82 times [2021-05-02 12:39:36,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:36,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559758192] [2021-05-02 12:39:36,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:40,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:40,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559758192] [2021-05-02 12:39:40,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559758192] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:40,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573767164] [2021-05-02 12:39:40,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:40,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:39:40,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:40,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 12:39:40,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:40,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:40,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573767164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:40,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:40,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 12:39:40,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569994143] [2021-05-02 12:39:40,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 12:39:40,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:40,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 12:39:40,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 12:39:40,559 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 87 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 86 states have internal predecessors, (175), 2 states have call successors, (4), 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 12:39:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:46,147 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2021-05-02 12:39:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 12:39:46,148 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 86 states have internal predecessors, (175), 2 states have call successors, (4), 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 175 [2021-05-02 12:39:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:46,148 INFO L225 Difference]: With dead ends: 184 [2021-05-02 12:39:46,148 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 12:39:46,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 8538.7ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 12:39:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 12:39:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2021-05-02 12:39:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.0057803468208093) internal successors, (174), 173 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2021-05-02 12:39:46,155 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2021-05-02 12:39:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:46,155 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2021-05-02 12:39:46,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0114942528735633) internal successors, (175), 86 states have internal predecessors, (175), 2 states have call successors, (4), 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 12:39:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2021-05-02 12:39:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 12:39:46,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:46,156 INFO L523 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:46,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:46,357 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:46,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:46,357 INFO L82 PathProgramCache]: Analyzing trace with hash 900508490, now seen corresponding path program 83 times [2021-05-02 12:39:46,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:46,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011360823] [2021-05-02 12:39:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:49,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:49,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:49,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011360823] [2021-05-02 12:39:49,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011360823] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:49,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532247290] [2021-05-02 12:39:49,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:49,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2021-05-02 12:39:49,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:49,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 12:39:49,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:49,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532247290] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:49,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:49,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 12:39:49,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869185961] [2021-05-02 12:39:49,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 12:39:49,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:49,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 12:39:49,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:39:49,949 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand has 88 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 87 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 12:39:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:56,016 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2021-05-02 12:39:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 12:39:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 87 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 177 [2021-05-02 12:39:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:56,017 INFO L225 Difference]: With dead ends: 186 [2021-05-02 12:39:56,017 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 12:39:56,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8586.5ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 12:39:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 12:39:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-05-02 12:39:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.0057142857142858) internal successors, (176), 175 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2021-05-02 12:39:56,023 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2021-05-02 12:39:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:56,024 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2021-05-02 12:39:56,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 87 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 12:39:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2021-05-02 12:39:56,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 12:39:56,024 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:56,024 INFO L523 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:56,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:56,225 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:56,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1092739544, now seen corresponding path program 84 times [2021-05-02 12:39:56,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:56,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014648020] [2021-05-02 12:39:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:59,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:59,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014648020] [2021-05-02 12:39:59,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014648020] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:59,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611988794] [2021-05-02 12:39:59,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:00,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2021-05-02 12:40:00,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:00,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 12:40:00,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:00,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:00,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611988794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:00,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:00,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 89 [2021-05-02 12:40:00,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684860143] [2021-05-02 12:40:00,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 12:40:00,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 12:40:00,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 12:40:00,518 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand has 89 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 88 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 12:40:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:06,854 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2021-05-02 12:40:06,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 12:40:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 88 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 179 [2021-05-02 12:40:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:06,855 INFO L225 Difference]: With dead ends: 188 [2021-05-02 12:40:06,856 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 12:40:06,857 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 9448.0ms TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2021-05-02 12:40:06,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 12:40:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 12:40:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.0056497175141244) internal successors, (178), 177 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-05-02 12:40:06,863 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2021-05-02 12:40:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:06,863 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-05-02 12:40:06,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 88 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 12:40:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-05-02 12:40:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 12:40:06,863 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:06,864 INFO L523 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:07,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-05-02 12:40:07,081 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:07,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1048686202, now seen corresponding path program 85 times [2021-05-02 12:40:07,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:07,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857208383] [2021-05-02 12:40:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:11,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:11,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:11,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857208383] [2021-05-02 12:40:11,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857208383] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:11,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355279482] [2021-05-02 12:40:11,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:11,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 12:40:11,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:11,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:11,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355279482] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:11,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:11,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 12:40:11,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325662649] [2021-05-02 12:40:11,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 12:40:11,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:11,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 12:40:11,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 12:40:11,762 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 89 states have internal predecessors, (181), 2 states have call successors, (4), 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 12:40:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:17,762 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2021-05-02 12:40:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 12:40:17,762 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 89 states have internal predecessors, (181), 2 states have call successors, (4), 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 12:40:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:17,763 INFO L225 Difference]: With dead ends: 190 [2021-05-02 12:40:17,763 INFO L226 Difference]: Without dead ends: 185 [2021-05-02 12:40:17,764 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 9570.1ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 12:40:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-02 12:40:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-05-02 12:40:17,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.005586592178771) internal successors, (180), 179 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2021-05-02 12:40:17,770 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2021-05-02 12:40:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:17,770 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2021-05-02 12:40:17,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 89 states have internal predecessors, (181), 2 states have call successors, (4), 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 12:40:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2021-05-02 12:40:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 12:40:17,771 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:17,771 INFO L523 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:17,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:17,972 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:17,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1663097500, now seen corresponding path program 86 times [2021-05-02 12:40:17,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:17,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400353710] [2021-05-02 12:40:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:22,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:22,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400353710] [2021-05-02 12:40:22,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400353710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:22,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972344670] [2021-05-02 12:40:22,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:22,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:40:22,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:22,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 12:40:22,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:22,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:22,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972344670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:22,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:22,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 12:40:22,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560895632] [2021-05-02 12:40:22,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 12:40:22,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:22,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 12:40:22,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 12:40:22,547 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 90 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 12:40:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:28,936 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2021-05-02 12:40:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 12:40:28,937 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 90 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 183 [2021-05-02 12:40:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:28,938 INFO L225 Difference]: With dead ends: 192 [2021-05-02 12:40:28,938 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 12:40:28,939 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 9909.8ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 12:40:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 12:40:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-05-02 12:40:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.0055248618784531) internal successors, (182), 181 states have internal predecessors, (182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2021-05-02 12:40:28,945 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2021-05-02 12:40:28,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:28,945 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2021-05-02 12:40:28,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.010989010989011) internal successors, (183), 90 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 12:40:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2021-05-02 12:40:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 12:40:28,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:28,946 INFO L523 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:29,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-05-02 12:40:29,147 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:29,147 INFO L82 PathProgramCache]: Analyzing trace with hash 593131970, now seen corresponding path program 87 times [2021-05-02 12:40:29,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:29,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481087703] [2021-05-02 12:40:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:33,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:33,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:33,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481087703] [2021-05-02 12:40:33,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481087703] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:33,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960501611] [2021-05-02 12:40:33,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:33,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2021-05-02 12:40:33,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:33,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 12:40:33,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:33,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:33,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960501611] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:33,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:33,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2021-05-02 12:40:33,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165311910] [2021-05-02 12:40:33,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 12:40:33,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:33,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 12:40:33,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=4457, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 12:40:33,836 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:40:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:41,466 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2021-05-02 12:40:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 12:40:41,467 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 185 [2021-05-02 12:40:41,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:41,468 INFO L225 Difference]: With dead ends: 194 [2021-05-02 12:40:41,468 INFO L226 Difference]: Without dead ends: 189 [2021-05-02 12:40:41,470 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4261 ImplicationChecksByTransitivity, 11255.3ms TimeCoverageRelationStatistics Valid=12288, Invalid=20654, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 12:40:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-02 12:40:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-05-02 12:40:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.005464480874317) internal successors, (184), 183 states have internal predecessors, (184), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2021-05-02 12:40:41,476 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2021-05-02 12:40:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:41,476 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2021-05-02 12:40:41,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:40:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2021-05-02 12:40:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 12:40:41,477 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:41,477 INFO L523 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:41,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 12:40:41,694 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -128831840, now seen corresponding path program 88 times [2021-05-02 12:40:41,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:41,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951789970] [2021-05-02 12:40:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:45,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:45,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951789970] [2021-05-02 12:40:45,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951789970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:45,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019914554] [2021-05-02 12:40:45,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:45,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:40:45,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:45,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 12:40:45,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:45,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:45,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:46,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019914554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:46,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:46,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 12:40:46,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993130011] [2021-05-02 12:40:46,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 12:40:46,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:46,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 12:40:46,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 12:40:46,433 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 92 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 12:40:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:52,692 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2021-05-02 12:40:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 12:40:52,694 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 92 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 187 [2021-05-02 12:40:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:52,694 INFO L225 Difference]: With dead ends: 196 [2021-05-02 12:40:52,694 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 12:40:52,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 10007.9ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 12:40:52,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 12:40:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 12:40:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.0054054054054054) internal successors, (186), 185 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2021-05-02 12:40:52,703 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2021-05-02 12:40:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:52,703 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2021-05-02 12:40:52,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 92 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 12:40:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2021-05-02 12:40:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 12:40:52,717 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:52,717 INFO L523 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:52,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:52,918 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:52,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:52,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1848648702, now seen corresponding path program 89 times [2021-05-02 12:40:52,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:52,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855231111] [2021-05-02 12:40:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:57,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:57,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:57,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855231111] [2021-05-02 12:40:57,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855231111] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:57,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626115975] [2021-05-02 12:40:57,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:57,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 12:40:57,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:57,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 12:40:57,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:57,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:57,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:58,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626115975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:58,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:58,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 12:40:58,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251102503] [2021-05-02 12:40:58,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 12:40:58,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:58,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 12:40:58,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:40:58,503 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand has 94 states, 94 states have (on average 2.0106382978723403) internal successors, (189), 93 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 12:41:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:06,883 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2021-05-02 12:41:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 12:41:06,885 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0106382978723403) internal successors, (189), 93 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 189 [2021-05-02 12:41:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:06,885 INFO L225 Difference]: With dead ends: 198 [2021-05-02 12:41:06,886 INFO L226 Difference]: Without dead ends: 193 [2021-05-02 12:41:06,887 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 12791.4ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 12:41:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-05-02 12:41:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-05-02 12:41:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.0053475935828877) internal successors, (188), 187 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2021-05-02 12:41:06,893 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2021-05-02 12:41:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:06,894 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2021-05-02 12:41:06,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0106382978723403) internal successors, (189), 93 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 12:41:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2021-05-02 12:41:06,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 12:41:06,895 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:06,895 INFO L523 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:07,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:07,113 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash -463062564, now seen corresponding path program 90 times [2021-05-02 12:41:07,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:07,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585995512] [2021-05-02 12:41:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:11,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:11,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585995512] [2021-05-02 12:41:11,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585995512] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:11,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762439109] [2021-05-02 12:41:11,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:12,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-05-02 12:41:12,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:41:12,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 12:41:12,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:12,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:12,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762439109] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:12,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:12,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 95 [2021-05-02 12:41:12,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115183455] [2021-05-02 12:41:12,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 12:41:12,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:12,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 12:41:12,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 12:41:12,617 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand has 95 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 94 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 12:41:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:20,016 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2021-05-02 12:41:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 12:41:20,017 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 94 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 191 [2021-05-02 12:41:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:20,018 INFO L225 Difference]: With dead ends: 200 [2021-05-02 12:41:20,018 INFO L226 Difference]: Without dead ends: 195 [2021-05-02 12:41:20,020 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 11673.4ms TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 12:41:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-02 12:41:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-05-02 12:41:20,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.0052910052910053) internal successors, (190), 189 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-05-02 12:41:20,026 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2021-05-02 12:41:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:20,026 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-05-02 12:41:20,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0105263157894737) internal successors, (191), 94 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 12:41:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-05-02 12:41:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 12:41:20,027 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:20,027 INFO L523 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:20,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:20,228 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:20,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1519497158, now seen corresponding path program 91 times [2021-05-02 12:41:20,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:20,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726171983] [2021-05-02 12:41:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:26,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:26,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:26,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726171983] [2021-05-02 12:41:26,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726171983] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:26,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25636970] [2021-05-02 12:41:26,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:26,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 12:41:26,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:26,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:26,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25636970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:26,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:26,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 12:41:26,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815103162] [2021-05-02 12:41:26,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 12:41:26,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:26,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 12:41:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 12:41:26,810 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 96 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 95 states have internal predecessors, (193), 2 states have call successors, (4), 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 12:41:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:35,810 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2021-05-02 12:41:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 12:41:35,812 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 95 states have internal predecessors, (193), 2 states have call successors, (4), 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 12:41:35,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:35,813 INFO L225 Difference]: With dead ends: 202 [2021-05-02 12:41:35,813 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 12:41:35,814 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 14260.2ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 12:41:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 12:41:35,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-05-02 12:41:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.0052356020942408) internal successors, (192), 191 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2021-05-02 12:41:35,837 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2021-05-02 12:41:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:35,837 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2021-05-02 12:41:35,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 95 states have internal predecessors, (193), 2 states have call successors, (4), 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 12:41:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2021-05-02 12:41:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 12:41:35,838 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:35,838 INFO L523 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:36,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:36,039 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:36,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1154107160, now seen corresponding path program 92 times [2021-05-02 12:41:36,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:36,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319053007] [2021-05-02 12:41:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:41,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:41,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319053007] [2021-05-02 12:41:41,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319053007] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:41,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684327535] [2021-05-02 12:41:41,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:41,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:41:41,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:41:41,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 12:41:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:41,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:41,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684327535] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:41,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:41,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 12:41:41,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013431659] [2021-05-02 12:41:41,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 12:41:41,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 12:41:41,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 12:41:41,830 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 96 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 12:41:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:51,409 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-05-02 12:41:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 12:41:51,411 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 96 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 195 [2021-05-02 12:41:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:51,412 INFO L225 Difference]: With dead ends: 204 [2021-05-02 12:41:51,412 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 12:41:51,413 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 14136.6ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 12:41:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 12:41:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 12:41:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.005181347150259) internal successors, (194), 193 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2021-05-02 12:41:51,420 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2021-05-02 12:41:51,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:51,420 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2021-05-02 12:41:51,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 96 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 12:41:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2021-05-02 12:41:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 12:41:51,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:51,421 INFO L523 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:51,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:51,622 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2097413750, now seen corresponding path program 93 times [2021-05-02 12:41:51,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:51,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326216847] [2021-05-02 12:41:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:57,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:57,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326216847] [2021-05-02 12:41:57,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326216847] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:57,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229064978] [2021-05-02 12:41:57,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:41:57,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2021-05-02 12:41:57,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:41:57,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 12:41:57,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:57,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:57,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:57,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:57,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:58,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229064978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:58,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:58,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 99 [2021-05-02 12:41:58,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132728034] [2021-05-02 12:41:58,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 12:41:58,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:58,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 12:41:58,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4660, Invalid=5042, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 12:41:58,690 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:42:10,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:42:10,110 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2021-05-02 12:42:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 12:42:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 197 [2021-05-02 12:42:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:42:10,113 INFO L225 Difference]: With dead ends: 206 [2021-05-02 12:42:10,113 INFO L226 Difference]: Without dead ends: 201 [2021-05-02 12:42:10,115 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4834 ImplicationChecksByTransitivity, 16872.1ms TimeCoverageRelationStatistics Valid=13971, Invalid=23471, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 12:42:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-02 12:42:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-05-02 12:42:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.005128205128205) internal successors, (196), 195 states have internal predecessors, (196), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2021-05-02 12:42:10,121 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2021-05-02 12:42:10,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:42:10,121 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2021-05-02 12:42:10,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:42:10,121 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2021-05-02 12:42:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 12:42:10,122 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:42:10,122 INFO L523 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:42:10,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:10,323 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:42:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:42:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1918020012, now seen corresponding path program 94 times [2021-05-02 12:42:10,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:42:10,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779841005] [2021-05-02 12:42:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:42:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:17,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:17,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779841005] [2021-05-02 12:42:17,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779841005] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:17,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548631413] [2021-05-02 12:42:17,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:17,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:42:17,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:42:17,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 12:42:17,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:17,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:17,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548631413] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:17,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:42:17,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 12:42:17,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921807230] [2021-05-02 12:42:17,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 12:42:17,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:42:17,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 12:42:17,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 12:42:17,955 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand has 99 states, 99 states have (on average 2.01010101010101) internal successors, (199), 98 states have internal predecessors, (199), 2 states have call successors, (4), 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 12:42:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:42:28,876 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2021-05-02 12:42:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 12:42:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.01010101010101) internal successors, (199), 98 states have internal predecessors, (199), 2 states have call successors, (4), 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 199 [2021-05-02 12:42:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:42:28,878 INFO L225 Difference]: With dead ends: 208 [2021-05-02 12:42:28,878 INFO L226 Difference]: Without dead ends: 203 [2021-05-02 12:42:28,880 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 16889.6ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 12:42:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-02 12:42:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-05-02 12:42:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.0050761421319796) internal successors, (198), 197 states have internal predecessors, (198), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-05-02 12:42:28,886 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2021-05-02 12:42:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:42:28,886 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-05-02 12:42:28,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.01010101010101) internal successors, (199), 98 states have internal predecessors, (199), 2 states have call successors, (4), 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 12:42:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-05-02 12:42:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 12:42:28,887 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:42:28,887 INFO L523 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:42:29,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:29,102 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:42:29,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:42:29,102 INFO L82 PathProgramCache]: Analyzing trace with hash 425733810, now seen corresponding path program 95 times [2021-05-02 12:42:29,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:42:29,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114170096] [2021-05-02 12:42:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:42:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:36,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:36,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114170096] [2021-05-02 12:42:36,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114170096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:36,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192425115] [2021-05-02 12:42:36,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:36,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2021-05-02 12:42:36,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:42:36,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 12:42:36,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:36,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:36,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:37,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192425115] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:37,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:42:37,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 12:42:37,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741241892] [2021-05-02 12:42:37,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 12:42:37,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:42:37,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 12:42:37,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:42:37,708 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 100 states, 100 states have (on average 2.01) internal successors, (201), 99 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 12:42:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:42:48,577 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2021-05-02 12:42:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 12:42:48,579 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.01) internal successors, (201), 99 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 201 [2021-05-02 12:42:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:42:48,580 INFO L225 Difference]: With dead ends: 210 [2021-05-02 12:42:48,580 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 12:42:48,582 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 17637.8ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 12:42:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 12:42:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-05-02 12:42:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.0050251256281406) internal successors, (200), 199 states have internal predecessors, (200), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-05-02 12:42:48,589 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2021-05-02 12:42:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:42:48,590 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-05-02 12:42:48,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.01) internal successors, (201), 99 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 12:42:48,590 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-05-02 12:42:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 12:42:48,591 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:42:48,591 INFO L523 BasicCegarLoop]: trace histogram [96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:42:48,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:48,805 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:42:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:42:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2084673648, now seen corresponding path program 96 times [2021-05-02 12:42:48,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:42:48,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032217659] [2021-05-02 12:42:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:42:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:55,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:55,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032217659] [2021-05-02 12:42:55,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032217659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:55,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606844071] [2021-05-02 12:42:55,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:55,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2021-05-02 12:42:55,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:42:55,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 12:42:55,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:55,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:55,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:56,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606844071] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:56,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:42:56,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 101 [2021-05-02 12:42:56,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636282101] [2021-05-02 12:42:56,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 12:42:56,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:42:56,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 12:42:56,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 12:42:56,834 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 101 states, 101 states have (on average 2.00990099009901) internal successors, (203), 100 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 12:43:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:43:07,788 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2021-05-02 12:43:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 12:43:07,789 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.00990099009901) internal successors, (203), 100 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 203 [2021-05-02 12:43:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:43:07,790 INFO L225 Difference]: With dead ends: 212 [2021-05-02 12:43:07,790 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 12:43:07,792 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5037 ImplicationChecksByTransitivity, 17110.4ms TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 12:43:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 12:43:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 12:43:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.0049751243781095) internal successors, (202), 201 states have internal predecessors, (202), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-05-02 12:43:07,799 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2021-05-02 12:43:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:43:07,799 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-05-02 12:43:07,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.00990099009901) internal successors, (203), 100 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 12:43:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-05-02 12:43:07,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 12:43:07,800 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:43:07,800 INFO L523 BasicCegarLoop]: trace histogram [97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:43:08,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 12:43:08,001 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:43:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:43:08,001 INFO L82 PathProgramCache]: Analyzing trace with hash -814620434, now seen corresponding path program 97 times [2021-05-02 12:43:08,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:43:08,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028628405] [2021-05-02 12:43:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:43:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:43:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:16,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:43:16,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028628405] [2021-05-02 12:43:16,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028628405] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:16,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914958972] [2021-05-02 12:43:16,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:43:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:16,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 12:43:16,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:43:16,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:16,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:17,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914958972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:17,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:43:17,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 12:43:17,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119353227] [2021-05-02 12:43:17,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 12:43:17,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:43:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 12:43:17,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 12:43:17,071 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 102 states, 102 states have (on average 2.0098039215686274) internal successors, (205), 101 states have internal predecessors, (205), 2 states have call successors, (4), 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 12:43:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:43:30,359 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2021-05-02 12:43:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 12:43:30,360 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0098039215686274) internal successors, (205), 101 states have internal predecessors, (205), 2 states have call successors, (4), 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 205 [2021-05-02 12:43:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:43:30,361 INFO L225 Difference]: With dead ends: 214 [2021-05-02 12:43:30,361 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 12:43:30,363 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 20412.2ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 12:43:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 12:43:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-05-02 12:43:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.0049261083743843) internal successors, (204), 203 states have internal predecessors, (204), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2021-05-02 12:43:30,369 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2021-05-02 12:43:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:43:30,369 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2021-05-02 12:43:30,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0098039215686274) internal successors, (205), 101 states have internal predecessors, (205), 2 states have call successors, (4), 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 12:43:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2021-05-02 12:43:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 12:43:30,370 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:43:30,370 INFO L523 BasicCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:43:30,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:43:30,587 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:43:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:43:30,587 INFO L82 PathProgramCache]: Analyzing trace with hash -64193844, now seen corresponding path program 98 times [2021-05-02 12:43:30,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:43:30,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695493255] [2021-05-02 12:43:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:43:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:43:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:38,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:43:38,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695493255] [2021-05-02 12:43:38,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695493255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:38,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958993204] [2021-05-02 12:43:38,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:43:38,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:43:38,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:43:38,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 12:43:38,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:43:38,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:38,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:38,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:38,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:38,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:38,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:38,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:39,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958993204] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:39,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:43:39,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 12:43:39,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222409390] [2021-05-02 12:43:39,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 12:43:39,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:43:39,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 12:43:39,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 12:43:39,898 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 102 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 12:43:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:43:47,668 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-05-02 12:43:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 12:43:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 102 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 207 [2021-05-02 12:43:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:43:47,670 INFO L225 Difference]: With dead ends: 216 [2021-05-02 12:43:47,671 INFO L226 Difference]: Without dead ends: 211 [2021-05-02 12:43:47,673 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 15436.9ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 12:43:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-02 12:43:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2021-05-02 12:43:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.0048780487804878) internal successors, (206), 205 states have internal predecessors, (206), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2021-05-02 12:43:47,679 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2021-05-02 12:43:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:43:47,679 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2021-05-02 12:43:47,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 102 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 12:43:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2021-05-02 12:43:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 12:43:47,680 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:43:47,681 INFO L523 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:43:47,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:43:47,881 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:43:47,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:43:47,882 INFO L82 PathProgramCache]: Analyzing trace with hash -458746582, now seen corresponding path program 99 times [2021-05-02 12:43:47,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:43:47,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399840786] [2021-05-02 12:43:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:43:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:43:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:54,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:43:54,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399840786] [2021-05-02 12:43:54,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399840786] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:54,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19856904] [2021-05-02 12:43:54,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:43:54,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-02 12:43:54,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:43:54,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 12:43:54,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:43:54,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:54,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:55,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19856904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:55,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:43:55,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 105 [2021-05-02 12:43:55,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466792913] [2021-05-02 12:43:55,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 12:43:55,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:43:55,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 12:43:55,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 12:43:55,564 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:44:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:44:06,478 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2021-05-02 12:44:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 12:44:06,478 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 209 [2021-05-02 12:44:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:44:06,479 INFO L225 Difference]: With dead ends: 218 [2021-05-02 12:44:06,479 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 12:44:06,481 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5443 ImplicationChecksByTransitivity, 16959.3ms TimeCoverageRelationStatistics Valid=15762, Invalid=26468, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 12:44:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 12:44:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-05-02 12:44:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.0048309178743962) internal successors, (208), 207 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2021-05-02 12:44:06,487 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2021-05-02 12:44:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:44:06,487 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2021-05-02 12:44:06,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.0) internal successors, (210), 104 states have internal predecessors, (210), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:44:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2021-05-02 12:44:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 12:44:06,488 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:44:06,488 INFO L523 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:44:06,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 12:44:06,705 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:44:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:44:06,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1666805752, now seen corresponding path program 100 times [2021-05-02 12:44:06,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:44:06,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962228382] [2021-05-02 12:44:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:44:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:15,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:44:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:15,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:44:15,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962228382] [2021-05-02 12:44:15,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962228382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:15,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994588681] [2021-05-02 12:44:15,083 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 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 12:44:15,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:44:15,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:44:15,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 12:44:15,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:44:15,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:15,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:16,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994588681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:16,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:44:16,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-02 12:44:16,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955496561] [2021-05-02 12:44:16,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 12:44:16,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:44:16,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 12:44:16,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 12:44:16,266 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 104 states have internal predecessors, (211), 2 states have call successors, (4), 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 12:44:27,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:44:27,180 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2021-05-02 12:44:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 12:44:27,182 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 104 states have internal predecessors, (211), 2 states have call successors, (4), 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 211 [2021-05-02 12:44:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:44:27,183 INFO L225 Difference]: With dead ends: 220 [2021-05-02 12:44:27,183 INFO L226 Difference]: Without dead ends: 215 [2021-05-02 12:44:27,185 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 18427.3ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 12:44:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-02 12:44:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-02 12:44:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.0047846889952152) internal successors, (210), 209 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2021-05-02 12:44:27,192 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2021-05-02 12:44:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:44:27,192 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2021-05-02 12:44:27,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 104 states have internal predecessors, (211), 2 states have call successors, (4), 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 12:44:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2021-05-02 12:44:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 12:44:27,195 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:44:27,196 INFO L523 BasicCegarLoop]: trace histogram [101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:44:27,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 12:44:27,397 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:44:27,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:44:27,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1324469094, now seen corresponding path program 101 times [2021-05-02 12:44:27,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:44:27,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294324264] [2021-05-02 12:44:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:44:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:44:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 10201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:35,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:44:35,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294324264] [2021-05-02 12:44:35,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294324264] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:35,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319565160] [2021-05-02 12:44:35,574 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 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 12:44:35,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2021-05-02 12:44:35,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:44:35,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 12:44:35,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:44:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 10201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:36,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319565160] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:36,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:44:36,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 12:44:36,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390829912] [2021-05-02 12:44:36,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 12:44:36,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:44:36,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 12:44:36,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 12:44:36,710 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand has 106 states, 106 states have (on average 2.009433962264151) internal successors, (213), 105 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 12:44:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:44:48,872 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2021-05-02 12:44:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 12:44:48,874 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.009433962264151) internal successors, (213), 105 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 213 [2021-05-02 12:44:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:44:48,875 INFO L225 Difference]: With dead ends: 222 [2021-05-02 12:44:48,875 INFO L226 Difference]: Without dead ends: 217 [2021-05-02 12:44:48,877 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 19461.9ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 12:44:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-05-02 12:44:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2021-05-02 12:44:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.004739336492891) internal successors, (212), 211 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2021-05-02 12:44:48,883 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2021-05-02 12:44:48,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:44:48,883 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2021-05-02 12:44:48,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.009433962264151) internal successors, (213), 105 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 12:44:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2021-05-02 12:44:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 12:44:48,884 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:44:48,887 INFO L523 BasicCegarLoop]: trace histogram [102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:44:49,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-02 12:44:49,088 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:44:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:44:49,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1688492220, now seen corresponding path program 102 times [2021-05-02 12:44:49,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:44:49,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533563508] [2021-05-02 12:44:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:44:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:57,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:44:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:57,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:44:57,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533563508] [2021-05-02 12:44:57,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533563508] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:57,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572480271] [2021-05-02 12:44:57,577 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 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 12:44:57,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 12:44:57,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:44:57,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 12:44:57,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:44:57,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:57,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:58,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572480271] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:58,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:44:58,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 107 [2021-05-02 12:44:58,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690354015] [2021-05-02 12:44:58,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 12:44:58,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:44:58,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 12:44:58,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 12:44:58,981 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand has 107 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 106 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 12:45:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:11,872 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2021-05-02 12:45:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-02 12:45:11,874 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 106 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 215 [2021-05-02 12:45:11,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:11,875 INFO L225 Difference]: With dead ends: 224 [2021-05-02 12:45:11,875 INFO L226 Difference]: Without dead ends: 219 [2021-05-02 12:45:11,877 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5658 ImplicationChecksByTransitivity, 20576.8ms TimeCoverageRelationStatistics Valid=16486, Invalid=27404, Unknown=0, NotChecked=0, Total=43890 [2021-05-02 12:45:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-05-02 12:45:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2021-05-02 12:45:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.0046948356807512) internal successors, (214), 213 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-05-02 12:45:11,884 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2021-05-02 12:45:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:11,890 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-05-02 12:45:11,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0093457943925235) internal successors, (215), 106 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 12:45:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-05-02 12:45:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 12:45:11,909 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:11,909 INFO L523 BasicCegarLoop]: trace histogram [103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:12,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 12:45:12,127 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1958609826, now seen corresponding path program 103 times [2021-05-02 12:45:12,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:12,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358471022] [2021-05-02 12:45:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:21,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:21,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:21,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358471022] [2021-05-02 12:45:21,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358471022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:21,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260527198] [2021-05-02 12:45:21,324 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 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 12:45:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:21,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 12:45:21,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:21,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:22,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260527198] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:22,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:22,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-02 12:45:22,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670465384] [2021-05-02 12:45:22,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 12:45:22,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:22,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 12:45:22,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 12:45:22,955 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 108 states, 108 states have (on average 2.009259259259259) internal successors, (217), 107 states have internal predecessors, (217), 2 states have call successors, (4), 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 12:45:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:36,381 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2021-05-02 12:45:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 12:45:36,383 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.009259259259259) internal successors, (217), 107 states have internal predecessors, (217), 2 states have call successors, (4), 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 12:45:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:36,384 INFO L225 Difference]: With dead ends: 226 [2021-05-02 12:45:36,384 INFO L226 Difference]: Without dead ends: 221 [2021-05-02 12:45:36,386 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 21629.6ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 12:45:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-02 12:45:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-05-02 12:45:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.0046511627906978) internal successors, (216), 215 states have internal predecessors, (216), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2021-05-02 12:45:36,393 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2021-05-02 12:45:36,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:36,393 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2021-05-02 12:45:36,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.009259259259259) internal successors, (217), 107 states have internal predecessors, (217), 2 states have call successors, (4), 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 12:45:36,393 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2021-05-02 12:45:36,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-02 12:45:36,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:36,394 INFO L523 BasicCegarLoop]: trace histogram [104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:36,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 12:45:36,597 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:36,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:36,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2130362496, now seen corresponding path program 104 times [2021-05-02 12:45:36,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:36,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602288531] [2021-05-02 12:45:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:47,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:47,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602288531] [2021-05-02 12:45:47,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602288531] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:47,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138208510] [2021-05-02 12:45:47,682 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 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 12:45:47,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:45:47,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:47,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 12:45:47,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:47,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:47,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:48,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:49,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138208510] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:49,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:49,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 12:45:49,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880085498] [2021-05-02 12:45:49,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 12:45:49,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:49,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 12:45:49,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 12:45:49,276 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 108 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 12:46:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:46:05,052 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2021-05-02 12:46:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 12:46:05,054 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 108 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 219 [2021-05-02 12:46:05,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:46:05,055 INFO L225 Difference]: With dead ends: 228 [2021-05-02 12:46:05,055 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 12:46:05,057 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 25738.8ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 12:46:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 12:46:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-02 12:46:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.0046082949308757) internal successors, (218), 217 states have internal predecessors, (218), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:46:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2021-05-02 12:46:05,066 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2021-05-02 12:46:05,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:46:05,066 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2021-05-02 12:46:05,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 108 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 12:46:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2021-05-02 12:46:05,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 12:46:05,069 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:46:05,070 INFO L523 BasicCegarLoop]: trace histogram [105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:46:05,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 12:46:05,288 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:46:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:46:05,288 INFO L82 PathProgramCache]: Analyzing trace with hash -319046178, now seen corresponding path program 105 times [2021-05-02 12:46:05,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:46:05,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178273806] [2021-05-02 12:46:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:46:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:46:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:46:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:46:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 11025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:46:16,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:46:16,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178273806] [2021-05-02 12:46:16,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178273806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:46:16,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682405958] [2021-05-02 12:46:16,589 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 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:46:16,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2021-05-02 12:46:16,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:46:16,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-02 12:46:16,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:46:16,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:16,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 11025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:46:17,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682405958] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:46:17,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:46:17,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 111 [2021-05-02 12:46:17,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563581407] [2021-05-02 12:46:17,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 12:46:17,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:46:17,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 12:46:17,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5890, Invalid=6320, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 12:46:17,915 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:46:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:46:32,790 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2021-05-02 12:46:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 12:46:32,791 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 221 [2021-05-02 12:46:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:46:32,791 INFO L225 Difference]: With dead ends: 230 [2021-05-02 12:46:32,792 INFO L226 Difference]: Without dead ends: 225 [2021-05-02 12:46:32,794 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6088 ImplicationChecksByTransitivity, 25287.4ms TimeCoverageRelationStatistics Valid=17661, Invalid=29645, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 12:46:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-05-02 12:46:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2021-05-02 12:46:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.004566210045662) internal successors, (220), 219 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:46:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2021-05-02 12:46:32,800 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2021-05-02 12:46:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:46:32,800 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2021-05-02 12:46:32,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.0) internal successors, (222), 110 states have internal predecessors, (222), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:46:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2021-05-02 12:46:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 12:46:32,801 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:46:32,801 INFO L523 BasicCegarLoop]: trace histogram [106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:46:33,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-05-02 12:46:33,001 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:46:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:46:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash -558703684, now seen corresponding path program 106 times [2021-05-02 12:46:33,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:46:33,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234375043] [2021-05-02 12:46:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:46:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:46:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:46:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:46:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:46:43,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:46:43,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234375043] [2021-05-02 12:46:43,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234375043] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:46:43,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285586895] [2021-05-02 12:46:43,353 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 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:46:43,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:46:43,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:46:43,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 12:46:43,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:46:43,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:43,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:46:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:46:44,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285586895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:46:44,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:46:44,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-02 12:46:44,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416791880] [2021-05-02 12:46:44,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 12:46:44,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:46:44,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 12:46:44,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 12:46:44,431 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 110 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 12:46:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:46:54,808 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2021-05-02 12:46:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-02 12:46:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 110 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 223 [2021-05-02 12:46:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:46:54,809 INFO L225 Difference]: With dead ends: 232 [2021-05-02 12:46:54,810 INFO L226 Difference]: Without dead ends: 227 [2021-05-02 12:46:54,812 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 19945.0ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 12:46:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-02 12:46:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2021-05-02 12:46:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.004524886877828) internal successors, (222), 221 states have internal predecessors, (222), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:46:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2021-05-02 12:46:54,818 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2021-05-02 12:46:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:46:54,818 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2021-05-02 12:46:54,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 110 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 12:46:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2021-05-02 12:46:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 12:46:54,819 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:46:54,819 INFO L523 BasicCegarLoop]: trace histogram [107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:46:55,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:46:55,019 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:46:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:46:55,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1058667034, now seen corresponding path program 107 times [2021-05-02 12:46:55,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:46:55,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623517518] [2021-05-02 12:46:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:46:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:47:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:47:01,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:47:01,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623517518] [2021-05-02 12:47:01,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623517518] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:47:01,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191520306] [2021-05-02 12:47:01,899 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 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:47:01,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2021-05-02 12:47:01,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:47:01,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 12:47:01,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:47:02,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:47:02,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191520306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:47:02,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:47:02,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-02 12:47:02,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131058207] [2021-05-02 12:47:02,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 12:47:02,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:47:02,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 12:47:02,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 12:47:02,753 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 111 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 12:47:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:47:16,969 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2021-05-02 12:47:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 12:47:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 111 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 225 [2021-05-02 12:47:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:47:16,971 INFO L225 Difference]: With dead ends: 234 [2021-05-02 12:47:16,971 INFO L226 Difference]: Without dead ends: 229 [2021-05-02 12:47:16,974 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 20270.2ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-02 12:47:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-02 12:47:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-05-02 12:47:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.0044843049327354) internal successors, (224), 223 states have internal predecessors, (224), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:47:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2021-05-02 12:47:16,980 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2021-05-02 12:47:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:47:16,980 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2021-05-02 12:47:16,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 111 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 12:47:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2021-05-02 12:47:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 12:47:16,981 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:47:16,981 INFO L523 BasicCegarLoop]: trace histogram [108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:47:17,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 12:47:17,199 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:47:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:47:17,199 INFO L82 PathProgramCache]: Analyzing trace with hash 573765880, now seen corresponding path program 108 times [2021-05-02 12:47:17,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:47:17,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378685903] [2021-05-02 12:47:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:47:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:47:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:47:24,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:47:24,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378685903] [2021-05-02 12:47:24,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378685903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:47:24,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648632238] [2021-05-02 12:47:24,981 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 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:47:25,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2021-05-02 12:47:25,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:47:25,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 110 conjunts are in the unsatisfiable core [2021-05-02 12:47:25,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:47:25,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:25,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:26,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:47:27,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648632238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:47:27,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:47:27,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111] total 113 [2021-05-02 12:47:27,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556275289] [2021-05-02 12:47:27,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2021-05-02 12:47:27,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:47:27,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-05-02 12:47:27,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6218, Invalid=6438, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 12:47:27,128 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 112 states have internal predecessors, (227), 2 states have call successors, (4), 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 12:47:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:47:40,346 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2021-05-02 12:47:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-05-02 12:47:40,347 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 112 states have internal predecessors, (227), 2 states have call successors, (4), 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 12:47:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:47:40,348 INFO L225 Difference]: With dead ends: 236 [2021-05-02 12:47:40,348 INFO L226 Difference]: Without dead ends: 231 [2021-05-02 12:47:40,350 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6315 ImplicationChecksByTransitivity, 20252.9ms TimeCoverageRelationStatistics Valid=18427, Invalid=30635, Unknown=0, NotChecked=0, Total=49062 [2021-05-02 12:47:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-02 12:47:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-02 12:47:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.0044444444444445) internal successors, (226), 225 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:47:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2021-05-02 12:47:40,356 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2021-05-02 12:47:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:47:40,357 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2021-05-02 12:47:40,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 112 states have internal predecessors, (227), 2 states have call successors, (4), 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 12:47:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2021-05-02 12:47:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 12:47:40,357 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:47:40,357 INFO L523 BasicCegarLoop]: trace histogram [109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:47:40,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:47:40,558 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:47:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:47:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1559775146, now seen corresponding path program 109 times [2021-05-02 12:47:40,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:47:40,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127784554] [2021-05-02 12:47:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:47:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:48,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:47:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 11881 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:47:48,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:47:48,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127784554] [2021-05-02 12:47:48,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127784554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:47:48,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287406854] [2021-05-02 12:47:48,372 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 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:47:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:47:48,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-02 12:47:48,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:47:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:48,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:47:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 11881 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:47:49,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287406854] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:47:49,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:47:49,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 114 [2021-05-02 12:47:49,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911889953] [2021-05-02 12:47:49,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-02 12:47:49,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:47:49,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-02 12:47:49,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6330, Invalid=6552, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 12:47:49,302 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 113 states have internal predecessors, (229), 2 states have call successors, (4), 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 12:48:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:48:01,073 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2021-05-02 12:48:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 12:48:01,075 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 113 states have internal predecessors, (229), 2 states have call successors, (4), 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 12:48:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:48:01,075 INFO L225 Difference]: With dead ends: 238 [2021-05-02 12:48:01,075 INFO L226 Difference]: Without dead ends: 233 [2021-05-02 12:48:01,078 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 18763.9ms TimeCoverageRelationStatistics Valid=18761, Invalid=31191, Unknown=0, NotChecked=0, Total=49952 [2021-05-02 12:48:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-05-02 12:48:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2021-05-02 12:48:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.0044052863436124) internal successors, (228), 227 states have internal predecessors, (228), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:48:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2021-05-02 12:48:01,084 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2021-05-02 12:48:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:48:01,084 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2021-05-02 12:48:01,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 113 states have internal predecessors, (229), 2 states have call successors, (4), 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 12:48:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2021-05-02 12:48:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 12:48:01,085 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:48:01,085 INFO L523 BasicCegarLoop]: trace histogram [110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:48:01,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2021-05-02 12:48:01,302 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:48:01,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:48:01,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1101666356, now seen corresponding path program 110 times [2021-05-02 12:48:01,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:48:01,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176892191] [2021-05-02 12:48:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:48:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:48:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:48:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:48:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:48:09,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:48:09,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176892191] [2021-05-02 12:48:09,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176892191] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:48:09,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298421741] [2021-05-02 12:48:09,447 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 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:48:09,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:48:09,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:48:09,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-02 12:48:09,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:48:09,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:09,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:48:10,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298421741] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:48:10,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:48:10,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 115 [2021-05-02 12:48:10,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841499226] [2021-05-02 12:48:10,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 12:48:10,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:48:10,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 12:48:10,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 12:48:10,448 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 114 states have internal predecessors, (231), 2 states have call successors, (4), 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 12:48:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:48:27,281 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2021-05-02 12:48:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-02 12:48:27,285 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 114 states have internal predecessors, (231), 2 states have call successors, (4), 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 12:48:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:48:27,286 INFO L225 Difference]: With dead ends: 240 [2021-05-02 12:48:27,286 INFO L226 Difference]: Without dead ends: 235 [2021-05-02 12:48:27,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6542 ImplicationChecksByTransitivity, 23890.8ms TimeCoverageRelationStatistics Valid=19098, Invalid=31752, Unknown=0, NotChecked=0, Total=50850 [2021-05-02 12:48:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-05-02 12:48:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-05-02 12:48:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.0043668122270741) internal successors, (230), 229 states have internal predecessors, (230), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:48:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2021-05-02 12:48:27,296 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 231 [2021-05-02 12:48:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:48:27,296 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2021-05-02 12:48:27,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 114 states have internal predecessors, (231), 2 states have call successors, (4), 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 12:48:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2021-05-02 12:48:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 12:48:27,298 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:48:27,298 INFO L523 BasicCegarLoop]: trace histogram [111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:48:27,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:48:27,499 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:48:27,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:48:27,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1053558638, now seen corresponding path program 111 times [2021-05-02 12:48:27,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:48:27,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145733447] [2021-05-02 12:48:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:48:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:48:36,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:48:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:48:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 0 proven. 12321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:48:36,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:48:36,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145733447] [2021-05-02 12:48:36,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145733447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:48:36,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372838135] [2021-05-02 12:48:36,095 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 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:48:36,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2021-05-02 12:48:36,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:48:36,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 121 conjunts are in the unsatisfiable core [2021-05-02 12:48:36,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:48:36,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:36,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:48:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 0 proven. 12321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:48:37,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372838135] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:48:37,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:48:37,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 117 [2021-05-02 12:48:37,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590352015] [2021-05-02 12:48:37,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-02 12:48:37,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:48:37,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-02 12:48:37,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6559, Invalid=7013, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 12:48:37,311 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:48:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:48:59,306 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2021-05-02 12:48:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-05-02 12:48:59,307 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 233 [2021-05-02 12:48:59,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:48:59,308 INFO L225 Difference]: With dead ends: 242 [2021-05-02 12:48:59,308 INFO L226 Difference]: Without dead ends: 237 [2021-05-02 12:48:59,310 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6769 ImplicationChecksByTransitivity, 29492.0ms TimeCoverageRelationStatistics Valid=19668, Invalid=33002, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 12:48:59,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-02 12:48:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2021-05-02 12:48:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 231 states have (on average 1.0043290043290043) internal successors, (232), 231 states have internal predecessors, (232), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:48:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-05-02 12:48:59,316 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 233 [2021-05-02 12:48:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:48:59,317 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-05-02 12:48:59,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 2.0) internal successors, (234), 116 states have internal predecessors, (234), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:48:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-05-02 12:48:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-02 12:48:59,317 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:48:59,317 INFO L523 BasicCegarLoop]: trace histogram [112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:48:59,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-05-02 12:48:59,534 INFO L428 AbstractCegarLoop]: === Iteration 113 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:48:59,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:48:59,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2050541200, now seen corresponding path program 112 times [2021-05-02 12:48:59,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:48:59,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098814587] [2021-05-02 12:48:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:48:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:09,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 0 proven. 12544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:09,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:09,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098814587] [2021-05-02 12:49:09,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098814587] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:09,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85715565] [2021-05-02 12:49:09,217 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 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:09,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:49:09,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:09,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-02 12:49:09,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:09,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:09,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 0 proven. 12544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:10,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85715565] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:10,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:10,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115] total 117 [2021-05-02 12:49:10,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357326296] [2021-05-02 12:49:10,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-02 12:49:10,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:10,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-02 12:49:10,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6672, Invalid=6900, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 12:49:10,443 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 116 states have internal predecessors, (235), 2 states have call successors, (4), 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 12:49:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:49:24,189 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2021-05-02 12:49:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-02 12:49:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 116 states have internal predecessors, (235), 2 states have call successors, (4), 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 235 [2021-05-02 12:49:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:49:24,192 INFO L225 Difference]: With dead ends: 244 [2021-05-02 12:49:24,192 INFO L226 Difference]: Without dead ends: 239 [2021-05-02 12:49:24,194 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6773 ImplicationChecksByTransitivity, 22586.0ms TimeCoverageRelationStatistics Valid=19781, Invalid=32889, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 12:49:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-02 12:49:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-02 12:49:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.0042918454935623) internal successors, (234), 233 states have internal predecessors, (234), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:49:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2021-05-02 12:49:24,201 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 235 [2021-05-02 12:49:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:49:24,201 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2021-05-02 12:49:24,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 2.0085470085470085) internal successors, (235), 116 states have internal predecessors, (235), 2 states have call successors, (4), 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 12:49:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2021-05-02 12:49:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 12:49:24,202 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:49:24,202 INFO L523 BasicCegarLoop]: trace histogram [113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:49:24,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-05-02 12:49:24,419 INFO L428 AbstractCegarLoop]: === Iteration 114 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:49:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:49:24,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1921891022, now seen corresponding path program 113 times [2021-05-02 12:49:24,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:49:24,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181212747] [2021-05-02 12:49:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:49:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:49:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:49:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 0 proven. 12769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:40,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:49:40,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181212747] [2021-05-02 12:49:40,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181212747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:40,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462187110] [2021-05-02 12:49:40,912 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 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:49:41,034 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-02 12:49:41,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:49:41,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-02 12:49:41,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:49:41,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:41,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:42,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:49:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 0 proven. 12769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:49:43,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462187110] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:49:43,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:49:43,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116] total 118 [2021-05-02 12:49:43,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920645872] [2021-05-02 12:49:43,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-02 12:49:43,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:49:43,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-02 12:49:43,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 12:49:43,153 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 118 states, 118 states have (on average 2.0084745762711864) internal successors, (237), 117 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)